(Fr. orgue, orgues; Dutch, Ger. Orgel; It., Sp. organo; Dan. Orglet; from Gk. organon via Lat. organum).
A wind instrument consisting of one or more scale-like rows of individual pipes of graded size which are made to sound by air under pressure directed from a wind-raising device and admitted to the pipes by means of valves operated from a keyboard. Although this definition could include such instruments as the Regals, Portative, Positive and Claviorgan, this article is concerned with the larger organ proper.
The organ is, together with the clock, the most complex of all mechanical instruments developed before the Industrial Revolution. Among musical instruments its history is the most involved and wide-ranging, and its extant repertory the oldest and largest (see Keyboard music, §§I–II; see also Continuo). Despite its essentially indirect and therefore relatively inflexible production of sound, no other instrument has inspired such avowed respect as the organ, ‘that great triumph of human skill … the most perfect musical instrument’ (Grove1), ‘in my eyes and ears … the king of instruments’ (Mozart, letter to his father, 17–18 October 1777).
IV. The classical and medieval organ
VI. Some developments, 1800–1930
VII. The Organ Revival, 1930–70
VIII. The organ at the close of the 20th century
BARBARA OWEN, PETER WILLIAMS (I–IV, V; 1–7, 9–13; VI–VII), STEPHEN BICKNELL (V, 8)
Plato (Laws) and Aristotle (Politics) both used the term ‘organon’ to denote a tool or instrument in a general sense: something with which to do a job of work (ergon, from root uerğ-; cf Werk, ‘work’). Plato (Republic) and later authors also used it to denote any kind or all kinds of musical instrument or contrivance. No Greek author used it to mean ‘pipe organ’, and even in the term ‘hydraulic organ’ (1st century ce) used by Hero of Alexandria ‘organ’ has the sense of tool, so that the whole term properly indicates ‘an aulos-like device or instrument, operated by water’. (In this context, moreover, ‘aulos’ may indicate not the musical wind instrument of that name but ‘pipe’, ‘conduit’ etc.; thus ‘hydraulic’ refers to the water and air conduits.) Classical and patristic Latin show a fairly clear evolution of the terms ‘organum’, ‘organa’, ‘organis’ from a general to a specific sense, and a musical connection is often clear from the context, more consistently so than in Greek. 9th- and 10th-century Arabic had its own versions of the Greek, for example hedhrula (‘hydraulis’) and urghanon (‘organon’). The use of ‘organum’ to denote a kind of polyphony is of course post-classical (see Organum).
In his commentary on Psalm cl St Augustine correctly explained the Vulgate word ‘organum’ as derived from ‘a Greek term’, and thought it unlikely to be correct in this psalm. He defined it as follows (the English translation is by John of Trevisa, 1398): ‘Organum is a generall name of all Instrumentes of Musyk: and is nethelesse specyally apropryte to the Instrument that is made of many pipes; and blowen wyth belowes’. In one sentence St Augustine used the singular organum and the plural organa for the same object, thus foreshadowing late medieval usage of the plural in English and in Old High German (Notker Labeo's diu organâ and orglun) and present-day usage in Slavonic languages, (varhany, orgány: plural). The English derivatives of ‘organ’ (‘organic’, ‘organize’) are mostly post-medieval terms, and are sometimes found first in the musical sense (i.e. ‘organic’: ‘like organs’), sometimes first in the non-musical sense: ‘organize’, ‘to give an orderly structure to’, appears in the 17th century, while ‘organize’, ‘to supply one or more sets of organ pipes to’ a harpsichord or piano, appears in the 18th century, probably from French usage (e.g. clavecin organisé). The plural ‘organs’ denoting a single object (e.g. orgues/ogres, Orgenen/Orgeln in 12th-century French and German verse) belongs to the musical use of the term. In some languages, notably French, the singular orgue seems much the later term, but documents are inconsistent (e.g. ‘money paied to the organe maker for the orgonis’, 14th century). A ‘pair of organs’ was a phrase used in 17th-century England generally to denote an organ of any size. During the 16th century, particularly in documents prepared by non-musicians, a ‘pair of organs or virginals’ may perhaps have indicated an instrument with longer than average compass, but more probably meant merely an ‘instrument of many pipes or strings’ (cf a ‘pair of stairs’ in 15th-century French and English). By 1613 the new two-manual organ of Worcester Cathedral was called ‘Double Organ’, and it is this kind of instrument that was normally meant both in 17th-century contracts (e.g. those of Durham, Wells and Canterbury, all 1662) and in the voluntaries for Double organ popular from around 1640. The agreement from Canterbury is explicit: ‘A Double Organ, viz a great Organ and a Chaire Organ’ (see Double organ). Biblical use of ‘organ’ in English translations is unreliable. Septuagint Greek uses organon most often in its general sense of ‘tool’; Old Testament Hebrew uses ûgab on four occasions, apparently to indicate some kind of wind instrument, perhaps a vertical flute; Vulgate Latin uses organum indiscriminately for both.
‘Organ’, ‘orgue’ and ‘organo’ are also used in the sense of Werk to denote individual manual or pedal departments of the whole instrument. Before about 1675 such terms applied only to departments built into separate organ cases. In England, Echoes and Swells were not usually called ‘Swell Organ’ before about 1800, although by about 1850 all departments of an organ were referred to as ‘organs’.
There are three main parts to the construction of an organ: the wind-raising device, the chest with its pipes, and the (keyboard and valve) mechanism admitting wind to the pipes. These three parts are common to any pipe organ; it is in their precise nature that essential differences lie – from the small hydraulic organ of the 3rd century bce; to the monster electric organ of the 1920s. At different points in history builders have tended to develop different parts of the instrument, while at other times (c1400 and c1850) all parts saw intense development.
3. A positive (or chamber) organ action.
4. Details of medieval and Renaissance chests.
Said to have been invented by the Alexandrian engineer Ctesibius, this most primitive form of organ, which was known from Greco-Roman times through numerous descriptions and iconography, differed from later versions in that the wind supply to the pipes was regulated by water-pressure rather than by weighted bellows. The number of pipes and compass of keys were small, and it was frequently used outdoors, and in various secular ceremonial functions. For a full discussion and illustrations of its construction, see Hydraulis and see also §IV, 1 below. It is not to be confused with the later Water organ, a normal pneumatic organ in which the bellows were operated by water power.
Fig.1 shows how in Theophilus's organ (11th century) the wind, raised by two or more bellows operated by the blowers' body-weight, is admitted to the several ranks of pipes when a perforated hand-slider is pulled out until its hole is aligned with the vertical channel between the wind-chest and the pipe-foot; to obtain a ‘clean’ sound, the slider must be operated as quickly as possible. To stop the sound, the slider is pushed back. The whole chest could be made of wood or moulded metal.
Other medieval chests differed significantly. According to the description in the Berne Codex (11th century), the wind did not pass to the two ranks of pipes from one duct but each pipe had its own duct from the wind-chamber below; thus the hand-slider required as many holes to be aligned as there were ranks. Also the ‘key’ was (like that of the hydraulis) a pivoted square which, when depressed, would push the slider into sounding position, while a spring pulled it back afterwards to its blocking position. Early medieval positives and portatives probably worked by one or other of such systems, which do not of themselves presuppose any particular size.
In the ‘pin action’ portrayed in fig.2, wind accumulated in the lower chamber or pallet box is admitted to each upper chamber or groove when the corresponding key depresses the hinged pallet. The new, crucial device in this system is the pallet and its groove or channel, both of unknown origin, although well established by the 14th century. The effectiveness and versatility of the resulting chest construction promoted the development of the Renaissance organ. In theory and (many organists and builders believe) in practice, the grooved or ‘barred’ chest facilitates tonal blend between the several pipes belonging to each key. Later medieval positives probably had a similar action, in most cases to fewer (and often sliderless) ranks of pipes; later medieval portatives also probably worked from a similar (though simpler and more compact) pin action, whatever the shape and size of the keys.
Fig.3a shows a medieval block-chest (or Blockwerk): the opened pallet admits wind to all the pipes on one groove or channel (i.e. all those belonging to one key) and the player is unable to separate the ranks of pipes. To obtain variety of sound some organs had grooves divided into two parts, each with its own pallet; each resulting ‘half-chest’ could have its wind blocked off with a valve somewhere between bellows and pallet box, though in practice the front half-chest (whose pipes were those of the case front or Open and perhaps Stopped Diapasons) played all the time. Each key in such a double chest operated two pallets. The reliability and wind-saving virtues of this system gave it some popularity in the Netherlands during the 15th century.
In the slider-chest (? late 15th century) shown in fig.3b, the opened pallet admits wind to each single or multi-rank ‘stop’ by means of a perforated slip of wood (‘slider’) running longitudinally in the board between the pipe-foot and the groove on the upper level of the chest. The slider can be aligned either to allow wind to pass through (‘stop drawn’) or to prevent it passing through (‘stop pushed in’). By means of rods, trundles and levers, the sliders can also be operated by a ‘stop-knob’ near the player (below and in front of the chest itself). Sliders were known first in small organs, perhaps as early as 1400, but were not much used in larger ones (or the larger departments of two-manual organs) until the 16th century.
Fig.3c shows a spring-chest (early 16th century) in which the opened pallet admits wind to each single or multi-rank stop by means of a secondary pallet or ‘groove-valve’ for each, which is operated by the stop-lever bar. The spring acting on the secondary pallet also causes the bar to spring back to the ‘off’ position unless prevented (i.e. unless the player notches the stop-lever at the keyboard into the ‘on’ position).
Other spring-chests differed significantly. Many Italian ones from the late 15th century onwards had their secondary pallets placed vertically rather than horizontally, with the result that the bar moved horizontally. Because brass springs lose their flexibility in time, some builders in 16th-century Italy and 17th-century Germany designed the chest so that all the secondary pallets belonging to one groove could on occasion be pulled out in one strip (looking like a long, narrow drawer) and the faulty spring replaced without dismantling the pallet box.
The spring-chest is troublesome to make, as 17th-century theorists such as Mersenne and Werckmeister noted; it also takes up more room than a slider-chest. But it is said that spring-chests last longer, and (although no results of controlled experiments have been published) cause the pipes to speak better. Since there could be no loss of wind through shrinking or warping of sliders, spring-chests probably contributed to greater stability of tuning, although their complexity would be likely to make them more sensitive to the extremes of humidity and dryness found in modern, centrally heated churches. While the spaciousness of the chests dictated by the spatial requirements of the ‘groove-valves’ makes pipes and action more accessible for tuning and repair, it also requires that the main key pallets be made larger, making the touch heavier and less sensitive than that of slider-chest organs. This may be why the spring-chest was abandoned in the north, where higher wind pressures complicated this situation.
Fig.4 depicts the side and front elevation of a single-manual organ with suspended action. Organs of this simple construction have been built since at least the 15th century; larger and more sophisticated instruments of this type were being built in Spain, Italy and Central America as late as the 19th century, and there was a revival in the use of this action during the late 20th century.
In this action, shown in exploded detail in fig.5, all motion is in the same (downward) direction. A tracker attached to the centre of a key which is hinged at the back end descends when the key is depressed. As the width of the chest is greater than that of the keyboard, the action is intercepted by a roller, which transfers the motion horizontally to another tracker, which in turn pulls down the pallet in the chest, admitting wind to the groove under the pipe. Very small or very primitive organs can be found in which the rollerboard is eliminated and the trackers simply fanned or splayed to correct the discrepancy between key-scale and chest-scale.
Fig.6 depicts the so-called balanced action which originated in north-western Europe in the 17th century, was adopted in England shortly before the beginning of the 18th century and was widely used in the 19th century. This action, which allows for more flexibility in the location and number of chests, involves a transfer of motion direction. Fig.6a illustrates how the key, when depressed, pushes up one end of the balanced backfall, causing the opposite end to descend, pulling down the tracker attached to the pallet; in this simple arrangement the backfalls must be splayed to compensate for the difference between key-scale and chest-scale, but it is also possible for them to remain key-scale and communicate with a rollerboard, as shown in fig.6b. Fig.6c shows another variant (illustrated here in the pedal department, although the mechanism may also be applied to the manuals) in which motion is transferred by means of a rocking square.
Regardless of the type of key action (suspended or balanced), the stop action usually operates in the manner depicted in fig.5. The stop-knob is attached to a rod which is attached either to a rotating trundle (as shown), or, by means of squares, to a rocking arm, which in turn draws or retires the slider associated with a particular rank of pipes on the chest.
Fig.7 shows a four-manual instrument in cross-section; only a selection of pipe-ranks is indicated. In this design, the pedal-chests may be to the left and right of the main case or (with less immediacy of sound) behind it. The space between bench and Chair Organ was often enlarged in Roman Catholic countries to accommodate a choir and orchestra; special stops (cornet), chests (echo chests), and toy stops could be conducted off the main wind-trunks; one or more departments could be enclosed in a Swell box; Tremulants could be fixed in the main trunk, a subsidiary department trunk, or the trunk of an isolated stop (seeTremulant).
Fig.8 illustrates the principles of a mechanism invented in the mid-19th century byCharles Spackman Barker and constantly redesigned and patented by countless other builders. When a key is depressed, air under pressure from the main bellows is admitted through a pallet-like valve to inflate small bellows (one for each key) which, in moving, travel sufficiently to pull a tracker connected with the pipe-chest pallet. On release the exhaust valve at the top allows the small bellows to deflate immediately. In this way, average light finger pressure on the key brings into play a wind-power sufficient to operate pallets at some distance from the player, especially those of large-scale pipes and on chests working under high wind pressure (e.g. Solo organ). The pneumatic unit, or ‘Barker lever’, is placed inside the organ, near the keyboard, at a point where the tracker rises vertically from the keys and merely intercepts an otherwise traditional mechanical action. Perhaps one of its most important applications is to inter-manual couplers, allowing additional manuals to be coupled to the main manual without significantly increasing key resistance. This type of assisted action was used extensively in France during the second half of the 19th century, and generally used for larger organs in the USA and Britain during the same period.
(Kegellade). The cone-chest, or ventil-chest with cone-shaped valves, is found particularly in 19th-century German organs (fig.9 shows a mid-century example) and was one of several chests developed between 1775 and 1875 in the interests of mechanical reliability. Though bulky, the cone-chest avoided some of the faults to which a working slider-chest was subject, but was more inclined to be affected by extremes of humidity. In the cone-chest all the pipes belonging to a rank are mounted on one channel running the length of the chest; to the whole of this channel wind is admitted when the stop-knob is drawn. There are no lateral key-channels or grooves in such ‘barless chests’. Each key activates a series of cone-shaped valves, one for each pipe; thus although only one stop may be required by the organist, all the other valves move. The valves need not be cone-shaped; they may even be replaced by little discs operated by small bellows-like pneumatic motors.
This type of action, shown in fig.10a and b, was developed in the late 19th century, and could be applied either to slider-chests or to the newer individual pipe-valve chests. Two forms of tubular-pneumatic action are illustrated here: in fig.10a, when a key is depressed, air under pressure in the touch-box above the key is admitted along the lead or copper tubing to the bellows-like ‘primary’ pneumatic motor which opens, forcing a valve to rise (hence the name ‘pressure-pneumatic action’). This in turn releases air from the pallet box that was held under a secondary motor. The secondary motor collapses under pressure from the wind in the pallet box, pulling open the pallet. ‘Exhaust-pneumatic action’ (shown in fig.10b) is that in which the air under pressure is contained in a box underneath the pipe-chest pallet box, pushing the pallet shut via the secondary motor when at rest; when depressed, the key opens a valve that allows this wind to escape along the lead tubing away from the pallet, collapsing the primary and secondary motors, thus pulling open the pallet. Pressure-pneumatic action never became popular in France, and in England and North America many builders preferred exhaust-pneumatic, believing it to be more prompt, silent and durable. Tubular-pneumatic action continued to be extensively used by builders in Australia and New Zealand until the 1940s.
From the final years of the 19th century to the middle of the 20th century, electricity was used in a variety of ways by different organ builders and in different countries. The basic premise is that the key (or stop control) closes a switch which sends a low-voltage impulse to a mechanism in the chest. One of the simplest forms, utilizing the traditional slider-chest, is shown in fig.11. An electro-magnet is activated when the key is depressed and its circuit completed. The armature acts as a valve, rising to the magnet and thus allowing the wind to escape from the primary pneumatic motor (previously filled with wind from the pallet box) which in turn collapses, opening the port below the secondary pneumatic motor and thus allowing its wind to escape. On collapsing, the secondary motor pulls down the pallet. On the release of the key, the circuit is broken, the magnet drops the armature valve and wind is restored to the small pneumatic motor, while the external spring closes the port under the main pneumatic motor which inflates and, assisted by the pallet spring, pushes up the pallet.
Electric action is most commonly used in conjunction with various types of ‘individual pipe-valve’ chests, in which there is a separate valve for each pipe. An early type, also used in conjunction with tubular-pneumatic action, is the ventil chest (fig.12). In this chest, also called a ‘membrane chest’, channels isolate the stops, and a stop is activated by releasing wind into its channel. Felt and leather discs attched to thin leather pneumatic pouches replace the larger wedge-shaped pneumatic motors, since less effort is required to open a small pipe-valve. The electro-magnet is activated by an impulse from the key, exhausting a small channel to the primary pouch. This is pushed in by pressure in the action-box, pulling open a larger exhaust port; this in turn causes the valves under the pipes for a given note to be pulled open, admitting wind from the stop-channels into the pipes.
More complex but very efficient is the so-called ‘pitman’ chest, particularly popular in America, which uses a similar principle to open the pipe-valves. Other kinds of electric action include the Austin type, in which a trace attached to a single pneumatic motor opens all pipe-valves of a given note that have not been disengaged by the stop mechanism, and the ‘direct electric’ or ‘electro-mechanical’ type, in which each pipe-valve has its own magnet, directly energized by the key contact, and stop-control is by means of switching mechanisms. For detailed diagrams and descriptions of various chest actions and other electrical mechanisms, see Audsley (B1905), W. and T. Lewis (B1911), Whitworth (B1930) or W.H. Barnes (D(xxxv)1930). Electric actions allow divisions of the organ to be separated and the console to be placed at a distance from the pipes if required. Since electricity takes the place of a direct mechanical connection, however, control over pipe-speech is sacrificed.
In fig.13, derived from Theophilus's organ (see §II, 2 above), air is fed in turn by three ‘feeder bellows’ through channels meeting inside the conflatorium to make one central duct (the inner construction is shown with dotted lines); before the channels meet, the wind passes through a copper valve which flaps open as the bellows send out air and flaps closed as soon as they are emptied. The collected wind is then directed along a trunk curving up to the pipe-chest. There may be more than one conflatorium, and the bellows can be in pairs or larger sets.
The late medieval bellows (Ger. Spanbalg) was wedge-shaped, consisting of upper (movable) and lower (fixed) boards hinged at one end, and wooden ribs hinged with leather. They could be of any size, depending on the size of the organ. They could be single-fold (fig.14a) or multifold (14b); during the 17th and 18th centuries the former was favoured in northern European countries, and the latter in France and southern European countries. The number of bellows in an organ varied with the size, from the small single-bellows portative to large cathedral organs with eight or more; the average church organ usually had two to four. Methods of operation varied, but all were based on the principle of mechanically raising the weighted upper board of the bellows and then allowing it to ‘rest on the wind’; by the time one bellows had been exhausted, another would have been filled, thus assuring a continuous supply. A system of one-way check-valves allowed only the filled bellows to deliver wind to the wind-chests of the organ.
The commonest means of filling the bellows were either by treading (hence the German term Balgetreter) on one end of a lever which pushed up the upper board (fig.14a), or by pulling down on a lever which pulled up the upper board (fig.14b). In some instrances, especially if the bellows were located above the organ, a system of ropes and pulleys was employed, but in all cases the motive power was the organ-blower's body weight and muscle. Small or medium-sized instruments could be blown by a single person, but larger ones often required several.
The wedge-bellows system was universally in use until the 18th century. Although effective, it was bulky, because a minimum of two bellows was needed to provide an uninterrupted supply of wind to the chests of the organ, and even in quite small organs a separate person was required to operate them. Early in 18th-century England a more compact arrangement appeared, perhaps orginally devised for chamber organs, in which a single wedge-bellows affixed to the underside of a board fed wind into a second, weighted wedge-bellows above, which in turn delivered it to the wind-chest. Continuous operation of the lower (feeder) bellows assured that the upper (reservoir) bellows would always contain sufficient wind. In chamber organs, this allowed the player to provide the wind by operating a foot-lever connected to the feeder-bellows; when applied to larger organs, the feeder would still have to be operated by a second person.
An improvement on this system was the replacement, in the late 18th century, of the upper wedge (reservoir) with a horizontal reservoir having usually two sets of ribs with a floating-frame between, expandable on all four sides, which afforded greater capacity within the same space and allowed the entire wind-supply system to be located in the base of the organ-case (fig.15). This reservoir is continuously supplied with wind by two wedge-feeders below it, operated by a rocking lever which opened one while it closed the other. By this means a single person could supply adequate wind to a fairly large instrument, although as larger organs were built in the early 19th century, more than one reservoir (and thus more than one organ-blower) was required.
By the 19th century this system was in universal use in England and America, and was soon adopted in France and elsewhere. Early in the 19th century the English builder Benjamin Flight, noting that a slight pressure-rise occurred as the typical double-fold reservoir collapsed, reversed the fold of the upper set of ribs to help equalize the pressure (see fig.15). This system was widely used in England thereafter, although not adopted in America until the 1880s and rarely employed on the Continent save by the French who, following Cavaillé-Coll, devised complex wind systems involving multiple reservoirs of this type, often supplying differing wind pressures. In the 20th century, with the advent of the electric fan-blower, builders elsewhere often adopted this kind of multiple-reservoir, multiple wind-pressure system.
In the mid-20th century, some builders replaced the smaller regulating reservoirs with a spring-loaded ‘floating’ plate, attached by a rubber-cloth membrane to the bottom of the wind-box of the soundboard. While useful in saving space in small organs, these devices (called ‘Schwimmer’ by the German builders, a term also adopted by many English-speaking builders) often produced undesirable wind characteristics such as oscillation and pressure-drop unless carefully designed and adjusted.
During the 17th century a type of square, multifold bellows appeared in France, called soufflets à lanterne because of their resemblance to multifold paper or parchment (‘Chinese’) lanterns. The weighted top board was raised by a rope and pulley and allowed to collapse, sending wind to the organ; as with the wedge-bellows, more than one was needed for a continuous supply. In 19th-century Germany, the box-bellows (Kastenbalg) appeared. It operated on the same principle as a gasometer, in that a weighted smaller box, fitting snugly into a larger one, was raised by a pulley and allowed to drop, forcing wind into the organ. Neither became widely accepted, probably because the former was more fragile than its wedge-shaped counterpart, and the latter, being made of wood, was liable to get out of order owing to atmospheric changes.
Until the middle of the 19th century, manpower was the only means of operating the feeders, even in large organs, although in these one sometimes found alternative systems such as a crank-and-flywheel operating three feeders from a camshaft. During the second half of the 19th century, while manpower still sufficed for most smaller church organs, advancing technology offered alternatives for the larger ones. English builders such as Hill and Willis favoured steam power, by which steam-driven pistons supplied the wind in place of the feeders; such a system was employed in the Royal Albert Hall, London, from 1871 to 1920. In America, water power from the mains was preferred, especially by city churches, which were exempt from water taxes. These water motors were quite simple, the principle being a reciprocating piston which was attached to the lever operating the feeders. At the turn of the century, the electrically operated centrifugal fan blower came into use, eliminating the necessity of feeders, and is now almost universally employed.
With the advent of the unlimited mechanical wind supply brought by the fan blower and by the use of multiple small reservoirs, a fashion for ‘rock-steady’ wind supply emerged, particularly in connection with the ‘monster’ organs of the early 20th century. Study of the wind characteristics of pre-20th-century organs during the 1970s and 80s began to cast doubt on the musical efficacy of an inflexible wind system. Although this inevitably caused some controversy among both players and builders, by the end of the 20th century many had accepted that a wind system with a carefully calculated amount of natural ‘give’ is of musical value, especially in organs designed to emulate historical tonal principles. Many of these eschew modern wind systems for reproductions of older types, sometimes with both electric and manual blowing options.
There are several classes of organ pipes, the two oldest and most integral to the development of the organ being flue pipes and reed pipes. More common by far, though not necessarily more varied, are flue pipes. Both types operate on the coupled-air system of sound production common to flutes, recorders, oboes, clarinets etc.
4. Diaphones (valvular reeds).
Air under pressure from the chest passes through the foot-hole (bore) at the base of the pipe-foot (fig.16) and so through the flue or windway, to issue in a flat sheet of wind striking the edge of the upper lip; the refracted wind causes eddies to form at the mouth, first on one side of the upper lip, then on the other. The natural frequency of the pipe’s body is coupled to the note of the ‘edge tones’ produced at the upper lip and gives to the eddies a rate of production that becomes the frequency of the note produced. Thus the effective length of the pipe is the principal factor in the pitch of the note.
Pitch and timbre are affected by several other factors, few of which, however, are variable outside narrow limits. A narrow pipe, to produce a certain pitch, must be longer than a wide one; a conical one must likewise be longer if it narrows towards the top, but shorter if it tapers outwards. Such variations in shape, however, are generally more important for their effect on a pipe’s timbre than on its pitch. A cylindrical pipe stopped at the end will sound approximately an octave lower than if it were open; for a conical pipe the difference is not quite so great. A half-stopped cylindrical pipe (i.e. with its cap pierced and usually a tube passing through the hole) speaks at a somewhat higher pitch than a stopped pipe.
The narrower the mouth or the smaller the flue, then the smaller the volume of air (at any given pressure) striking the upper lip and the softer the sound; the higher the mouth in relation to its width (i.e. the greater the ‘cut-up’), then the rounder, duller or more flute-like the tone (hence the designation ‘flute stops’); the narrower the pipe as a whole, the richer the harmonic spectrum and the more string-like the tone (hence ‘string stops’). It was said at one time that the harder the metal, the richer the harmonic spectrum; or the more lead contained in the pipe-alloy, the ‘duller’ the sound. But Backus and Hundley (C1966) established from theoretical and experimental evidence that ‘the steady tone of a pipe does not depend on the material of the pipewall. The belief that the use of tin in constructing pipes gives a better tone appears to be a myth unsupported by the evidence’. Experienced voicers, however, will aver that the composition of pipe metal does affect tone quality, and that it is impossible to match exactly the tone quality of two otherwise identical pipes made of very different alloys. More to the point, perhaps, is that tin-lead alloys are easy to work and shape, thus allowing the builder a high degree of adjustment at the parts of the pipe crucial to voicing processes.
Most of these factors can be used only to a certain degree: a point is soon reached when a pipe will not speak at all, even when other factors are altered, e.g. increasing or decreasing the wind pressure. Consequently the various interrelated factors involved in voicing a pipe require pragmatic expertise in their manipulation.
In addition to its more general usage, the term ‘scale’ can refer to a pipe’s diameter in relation to a norm (‘wide’ or ‘narrow’ scale), and the relationship or ratio between one pipe’s diameter and that of its octave below in the same rank (3:5 etc.; see Scaling). One well-known norm is the Normprinzipal suggested at the German Organ Reform (Orgelbewegung) conferences in the 1920s; this norm is ‘one pipe larger’ than the Normalmensur promulgated by J.G. Töpfer about 1845 (thus the diameter of Töpfer’s C pipe is that of the Normprinzipal C). G.A. Sorge had been the first to use logarithms to find constant scalings for organ pipes (c1760), calculating pipe diameter, pipe length, mouth width and mouth height by this method. Other 17th- and 18th-century theorists (such as Mersenne and Bédos de Celles) suggested scaling-figures by means of tables culled from practical experience and from the empiricism of organ builders themselves. Only two generations after Sorge did Töpfer develop the idea of arithmetical calculation for pipes (with immense influence on builders of his time): he calculated the cross-sectional area of a pipe an octave higher than the given pipe by applying the ratio 1:√8. Thus a pipe with half the diameter of a given pipe is not an octave (12 pipes) above but 16 or 17 pipes above. Such a factor as 1:√8 was itself reasonable, and many older builders had worked more or less to it, though empirically and not rigidly; indeed, Töpfer’s formula can be deplored for the encouragement it gave to 19th-century ‘organ-factory builders’ who applied a constant scale irrespective of the acoustics of the church or indeed any other variable of importance to organ tone. The Orgelbewegung’s Normprinzipal was similarly abused by some of the less imaginative builders of the neo-Baroque era in the early 20th century.
Fig.17 shows some flue-pipe shapes and is scaled to indicate the relative sizes of different types all producing the same C. (The Normprinzipal diameter of the C pipe at a pitch standard of a' = 435 is 155·5 mm; at a pitch standard of a' = 440, the diameter for C would be reduced to 154·17 mm – a fine point of difference since variations in temperature will change the pitch this much). Most historic types of English Open Diapason, French Montre and Venetian Principale have been wider in scale than the Normprinzipal, and for many builders it remains merely one of the possible norms. It must also be remembered that the diagram does not refer to factors other than scaling, such as wind pressure. Mouth widths are usually expressed as proportions of the circumference, and those ordinarily used range from 2:7 down to 1:6, though 1:4 remains common for Principal pipes, and further extremes have been used for special effects. The cut-up is expressed as a fraction of the mouth width, ‘quarter cut-up’ indicating that the mouth is a quarter as high as it is wide.
Wooden pipes are either stopped (most commonly 8', then 16' and 4') or open (16', 8', 4', 2'); sometimes half-stopped wooden pipes (i.e. with a pierced stopper) of the Rohrflöte (Chimney Flute) type are found, especially in small organs. Metal or wood conical pipes narrowing towards the top have been found in the largest Dutch, German and Spanish organs since about 1540. Metal pipes with ‘pavilions’ or ‘bells’ (inverted conical caps) were made especially by French and English builders for about a century from about 1840, both on the flute and string side of tone-colour, as well as in Principals. Overblowing pipes have also been popular in large organs and in special instruments made for colourful secular use; the most common during the period c1600–1800 was the narrow-scaled, narrow-mouthed open cylindrical pipe, overblowing to the 2nd partial or ‘at the octave’ above. Such pipes require to be twice as long as the pitch length (8' for 4' pitch). Stopped pipes overblow to the 3rd partial or ‘at the 12th’ above, and require to be three times as long as the normal stopped length (6' for 4' pitch); they are fairly rare. Overblowing flute pipes (Flûte harmonique, etc.) became widely used after the middle of the 19th century, having been developed to a high degree in France. Such pipes are of double length but of the scale of a normal-length open flute, and are pierced at the node (approximately halfway up from the mouth) with one or two small holes. Given full wind, such pipes will overblow, giving a strong, sweet and rather fundamental tone not unlike that of the modern orchestral flute, but are not usually found below 13/5' e' in pitch, the lower part of the stop consisting of wide-scaled open pipes of normal length. Alternatively, to prevent overblowing in narrow-scaled string-toned pipes, or to aid tuning at the mouth of stopped pipes, ‘ears’ or ‘beards’ are often added: these are short metal plates or rods of metal or wood soldered or held to the sides of (and sometimes below) the mouth, protruding from it and helping to direct the vortices of wind on to the edge of the upper lip.
Air under pressure from the chest passes through the bore into the boot and so through the opening in the shallot (fig.18); in so doing the wind sets the thin, flexible brass reed-tongue into vibration against the shallot; this in turn sets the air column in the pipe or resonator into vibration, producing a coupled system. The frequency of the note produced is determined by the length of the air column in the resonator and by the length, mass and stiffness of the reed-tongue.
The pitch and tone of the pipe are affected by many factors; if all the factors are constant, then the longer the reed-tongue and shallot, the lower the pitch. To produce a required pitch in reed pipes with either cylindrical or conical resonators, the resonator must be shorter the longer the tongue. But in practice this property is used within only a small margin, as the tone is more immediately and strikingly affected by a change in the relationship between tongue length and resonator length. Natural ‘full-length’ (‘harmonic-length’) cylindrical resonators correspond roughly in length to stopped pipes of the same pitch; for natural ‘full-length’ conical resonators the ‘resonance length’ is as little as three-quarters of the pitch length (i.e. 6' or 7' for an 8' Trumpet). A reed pipe will speak (although weakly and without fundamental) without its resonator, whose purpose is to reinforce certain partials, to ‘give tone’ to the pipe. But in a reed with a resonator a point is soon reached, if the reed-resonator relationship is altered, when the pipe will either fly off its speech or not speak at all. This is particularly true of double-cone reeds such as Oboes and Schalmeys.
The thinner the tongue, the richer the harmonics in the tone it produces; the thicker the tongue, the smoother and more fundamental the tone. Wider resonators produce stronger tone; conical resonators have a ‘thicker’ partial-content than cylindrical ones. The resonator gives its air column its own natural frequency; when this is greater than that of the tongue (i.e. when the pipe is shorter than the tongue requires for both to respond naturally to the same pitch) the tone becomes brighter, richer in partials. The more open the shallot, the louder and richer the tone; to obtain brilliance from partly closed shallots, higher wind pressure is required; to obtain a rounder, more horn-like tone, 19th-century builders placed the opening higher on the face of the shallot, the curved tongue thus closing the opening before its travel was complete. As in the case of flue pipes, it has been established recently that the hardness of the resonator material (this can be, in order of decreasing hardness, brass, tin, lead or wood) is unlikely to influence the tone – tradition and hearsay notwithstanding. However, the hardness of the tongue material is a definite factor in tone quality. The commonest material used by modern builders is what is known as ‘half-hard’ brass, but soft brass, hard brass and even (the very hard) phosphor bronze are also used in certain instances. The thickness of the tongue likewise has an effect on tone.
Reeds with very short resonators (whatever their shape), and usually of small scale, are called Regal stops and were known from at least about 1475. In practice, most Regals are either predominantly conical in shape or predominantly cylindrical; they also exhibit an inconstant scale (i.e. relative to the reed-tongues, the resonators in the treble are progressively longer than in the bass). Reed stops with resonators of twice or even four times natural length were sometimes made in the later 19th century, especially by French and English builders, and became equivalent to overblowing flue pipes, although such overlength resonators are generally used only above the pitch of 2' c'. 19th-century builders, particularly in those two countries, very often placed their reeds on higher wind pressure than the flue stops (18 cm upwards) by means of divided windboxes and double pallets, in the chest. The desire to supply ‘carrying power’ by such means, particularly in the treble, had grown in France from about the second third of the 18th century onwards.
Fig.19 shows models of some of the more popular reeds of the early 17th century (PraetoriusSM, ii; fig.19a) and the late 19th (Audsley, B1905; fig.19b). A great deal depends on the use of various shapes and proportions of shallots, and these, like the tube, block and boot, may be made of wood (though this is more often a feature of low-pitched pedal reeds than a general alternative).
Free reeds were developed in Europe (probably after the Asian sheng) towards the end of the 18th century in several areas around the Baltic (see Free reed), and offered the first radically different type of organ pipe since flues and reeds had been perfected. Instead of a shallot with an orifice against which the tongue beats when wind excites it, a thick, oblong plate of brass is perforated with a narrow opening through which vibrates the close-fitting brass tongue (fig.20). It swings freely, hence ‘free reed’. The boot needs to be larger than that of a corresponding reed stop to allow copious winding. When made by German builders about 1825 and French builders about 1850, free reeds had resonators of various types and tone-colour, thus being legitimate ranks of organ pipes. However, some stops, such as the Physharmonika, had instead of individual pipe-resonators one resonating chamber common to all notes of the rank, thus taking less room on the chest. It was such pipeless free reeds that led to the various kinds of harmonium, or Reed organ, of the 19th century. Free reeds could be mass-produced more easily than the so-called beating-reed stops, although in itself the workmanship was not inferior. The best builders by no means regarded them as easy alternatives to beating reeds, and the best examples, especially when used at 16' pitch in the pedal, could sound deceptively like beating reeds.
Though less incisive in articulation and weaker in volume than the beating reed, the free reed had a quality highly favoured by its period: it could be made ‘expressive’. On admitting more wind to a free reed, the amplitude, but not the frequency, of the swinging tongue is increased; it can thus produce a louder tone without rising in pitch, like a more or less excited tuning-fork but unlike a beating reed. When the free reed was a separate stop in a large organ, however, this property could not easily be exploited. Rarely outside the period 1810–1910, and then most often only in parts of northern France, central Germany and northern Italy, did the free reed achieve much popularity.
In 1894 Robert Hope-Jones took out a patent for a pipe, making use of the fact that any device allowing puffs of compressed air to be projected into a tube or resonating box (i.e. into a chamber holding a column of non-pressurized air) will create a sound if the frequency becomes audible (fig.21). On activation from the keyboard, air under pressure is admitted through the bore and sets the thin ‘vibrator’ into motion, whereupon the pallet-like disc attached to its free end admits a rapid and regular succession of puffs of air into the resonator (i.e. the pipe standing above). As with the free reed, the tone increases in volume but not in frequency as the wind pressure is increased; but, as is not the case with the free reed, greater wind pressure can make for much power. The tone itself is smooth and powerful, but always ‘unblending’ and useful only in organs (chiefly cinema organs) conceived on ideals current in a few areas of Europe and the USA between 1900 and 1930. The most enduring application of the diaphone principle has been fog-signalling, and many lighthouse diaphones were in regular use in the USA and elsewhere until late in the 20th century.
See also Organ stop.
Since the 3rd century bce it has been possible to regard the organ as an instrument composed of four elements: (i) a wind-raising device operated by lever, pulley or other mechanism, directing air under pressure to (ii) a ‘chest’ in which the wind is stored until admitted by (iii) a mechanism operated by some kind of keyboard to (iv) one or more rows of pipes (see Rank). The absence of any one of these elements prevents an instrument from being properly considered an organ. But other instruments could well have presented models or given ideas to early organ makers, particularly those in east Mediterranean countries. It is unlikely that at any single period the hydraulic organ was so firmly established that builders were indifferent to the influence of such wind instruments as the Syrinx, the Magrepha or the Bagpipe.
The most comprehensive recent surveys of archaeological and documentary evidence relating to classical and medieval organs are the studies by Jean Perrot (D(i)1965), K.-J. Sachs (C1970–80) and Peter Williams (D(i)1993).
6. The church organ, 1100–1450.
7. The 15th-century positive and portative.
Organ, §IV: The classical and medieval organ
No evidence, literary, iconographical, archaeological or even mythological, suggests that the pipe organ existed before the Hellenistic period or originated in any other than the Hellenistic sphere of influence. Later texts such as Athenaeus's The Sophists at Dinner (c200 ce) and Vitruvius's De a architectura (1st century ce) accredit the invention of the Hydraulis to one man, Ctesibius, an Alexandrian engineer and practical theoretician of the 3rd century bce. Curt Sachs's assessment (SachsH) of Ctesibius's achievement as uniting a mechanically raised and constant wind supply to a set of panpipes is not a totally unreasonable conjecture; but the surviving accounts of his work (written after his time) make it clear that he had also incorporated a wind-chest and even some kind of keyboard. Thus the hydraulis has the essential features of an organ. That Ctesibius was also said by Vitruvius to have invented a water clock offers an interesting parallel to the makers of organs and clocks in the medieval cathedrals of western Europe: such makers were, in effect, specialists in complex machinery. (See also Water organ.)
The principle of the water-pump is shown in..\Frames/F002781.htmlHydraulis, fig.2. But forge bellows were known much earlier, and their power potential had already been described in the Iliad. Bellows could have provided wind either directly to a regulator-chest under a row of pipes, or indirectly via the cistern of a water organ. But there is no evidence that either of these was done before the 2nd century ce, and it is possible that the organ was indeed born as a kind of engineering model, demonstrating the efficiency of Ctesibius's wind-raising and wind-stabilizing equipment. Hero of Alexandria's account (in On Pneumatics) gives no details of the pipes (whether flue or reed, open or stopped) or what the material, size, compass, tuning, pitch or voicing were.
Vitruvius's musical interests are more obvious than Hero's. The ranks of his organ were made to play separately by means of a specially constructed chest in which a channel ran lengthways under each row of pipes, wind being admitted to the channel through a valve operated by an iron handle. The keys are returned to position by an iron spring. As the key was set immediately under its pipes, either the close-set pipes or (more likely) the keys may have been unequally spaced.
The oldest reference to organ playing is a century and a half after Ctesibius: the ‘Delphic inscription’ (90 bce), full of implication about the organ's fame. Cicero, Lucretius, Petronius and other authors also wrote of its powers. By the 2nd century ce the Roman organ was heard in some of the more important theatres, games, amphitheatres, circuses, banquets and perhaps processions; a 3rd-century Greek inscription at Rhodes even suggests that it was played in Dionysian festivals. But the cylinder-pump water organ had so many disadvantages – requiring precision engineering and good metal, yet difficult to maintain, move and keep from corrosion – that it is easy to imagine bellows being applied over the years. Eventually, they replaced both pump and cistern, but it is not known when, where and how. Even in the later Roman Empire, however, organs were to be heard, and such poets as Claudian (c400) show organ playing to have accompanied celebrations attending accessions to a consulate, weddings and banquets during a period when ‘the singer has thrust out the philosopher’ (Ammianus Marcellinus, c350). Inscriptions found in several provinces far from Rome (Arles, Colchester, Budapest, Asia Minor) make it clear that organ playing was heard in gladiator contests (fig.22).
The few 5th- and 6th-century references include one or two by early Church Fathers, particularly those on the south and east coasts of the Mediterranean. But whether it was from personal experience that such writers as Boethius wrote of hydraulic organs, or Cassiodorus of a bellows-organ with wooden keys, is not certain; nor has 20th-century research shown what music the organ played, much less whether it played polyphony. Much can be tentatively conjectured from the iconographical evidence (see Hydraulis, §§2 and 3).
Parts of two Roman organs are said still to exist: fragments from Pompeii (now in the Museo Nazionale, Naples) and major remnants of a small organ found in Aquincum, Hungary (now in the Aquincum Museum, Budapest; fig.23). But the Pompeii fragments, which seem to belong to two different instruments, may not be parts of an organ, although their pipes are of cast metal, like those of an organ. The Aquincum organ has a plaque dated 228 ce; its ‘reconstruction’ in 1959 somewhat hampers more recent study of its parts. It has four rows of 13 cast bronze pipes, one open and three stopped, and a wooden wind-chest, lined inside and out with bronze. Wooden keys operate perforated sliders rather than pallets. E.L. Szonntagh's analysis (D(xvii)1981) appears to confirm that, although the wind-raising mechanism is missing, the Aquincum organ was a hydraulis, rather than a bellows-blown organ. Each set of pipes can be played separately from the others, and Walcker-Mayer (D(i)1970) theorizes that the four ranks of pipes were tuned according to four separate modes. Further research on this theory is necessary, but if the four registers of the Aquincum organ did in fact produce modal scales based on different pitches, the knowledge will have significant impact upon the understanding of the later development of modes, scales and keyboards.
Reconstructions of the hydraulis suggest that it might have had a wind pressure anywhere between 7·5 cm and 30 cm; also unknown is whether the pipework was always flue and, if so, whether the diameters were constant. While written sources give no firm evidence, iconography seems to suggest that: the pipes were usually flue; their diameter was constant; the tuning (in the more complete examples) was probably multiple, providing a choice of modes for rather less than an octave; and multi-rank chests may have provided different timbres with or without octave and 5th-sounding ranks. But none of these conclusions is reliable. The Aquincum organ supports the case for flue pipes, contradicts the suggestion that the diameter was constant, and leaves the tuning and timbre uncertain.
Organ, §IV: The classical and medieval organ
By the end of the 5th century the new Roman Empire of the east, with its base at Constantinople, had achieved a character of its own, intellectually conservative and favouring a world of abstract thought far removed from the practical technology of ancient Alexandria and Rome. Although the old Greek treatises were preserved in Byzantine copies and hence known to the Arabs, engineering projects like organ making remained undeveloped for a millennium. But by the 8th century western Europe itself no longer knew such masterpieces of Roman engineering as the Vitruvian hydraulis. All the sources suggest that the European 9th- and 10th-century ‘organ revival’ came about because the instrument was reintroduced from Byzantium.
Despite some hints in the sources, the organ was certainly not used in the Byzantine Church itself (and indeed is still not except occasionally in churches in the USA). But at least two facts seem to be clear: that most references relate to bellows-organs, and that the instrument continued to be part of the secular, courtly pomp in the capital city. In the first connection, a 10th-century Arabic source suggests that three (or two) bellows fed air into a large reservoir below the pipe-chest; in the second, it was no doubt because of their use at banquets, chariot races, weddings, processions and the like that organs were decked out in gold and costly decoration. Both the ‘blue’ and ‘green’ factions at court had an organ, but the instrument otherwise remained a rarity. At his palace the emperor had both automata (the famous ‘golden tree’ with moving, whistling birds activated by bellows; fig.24) and true organs in which at least one emperor (Theophilus, 9th century) took an interest. Nothing is known of the pipework, sound, compass, precise function or repertory of the organ in the Great Reception Room, or indeed anywhere else, though one 9th-century source does refer to ‘60 copper pipes’ in what appears to have been a large table-organ.
Organs became objects of visual and aural show, eliciting wonder and respect as diplomatic gifts or signs of royal power. In 757 a famous diplomatic instrument was sent to Pepin, King of the Franks, at Compiègne. A monk of St Gallen (possibly Notker Balbulus) reported that the ‘King of Constantinople’ also sent an organ to Charlemagne in 812, with bronze pipes, ‘bellows of bull leather’ and three sound effects (rumbling thunder, trembling lyre, tinkling cymbali) possibly suggesting pleno, flutes and little bells; but the source is doubtful, the language being somewhat hyperbolic (or possibly psalmodic). In any case such instruments were not church organs but extravagant gifts, like the 13th-century organ of 90 pipes sent from one Arab court to the Emperor of China.
An event of evident importance in the 9th-century chronicles was the arrival at Aachen in 826 of Georgius, a Venetian priest who undertook to construct a hydraulis. According to a poem glorifying Charlemagne's son Louis, Georgius's organ was a kind of royal or national symbol of power: ‘The organ, not seen in France before, a subject of pride for the Greeks, the only reason the people of Constantinople felt themselves your master: even the organ is now represented in Aachen’. Its intricate technology must have been the justification for such respect. The Aachen organ was used for occasions of pomp, not for chapel services; the Utrecht Psalter (compiled in France, perhaps near Reims) depicts, with little understanding, a hydraulis taking part in an ensemble illustrating Psalm cxlix (see fig.25); this too has little to do with church services, being merely symbolic, or perhaps depicting some sort of ‘signalling’ organ.
Organ, §IV: The classical and medieval organ
The high level of Arabic and Islamic culture from the 8th century to the 10th gave theorists and craftsmen the opportunity to work on bellows-organs; theorists in particular knew of such ‘instruments’ but seem rarely, if ever, to have seen one. A famous source, the Epistle to (or from) Muristus, describes two organs, one of which is a kind of siren or signal-organ; the sources containing Muristus's writings are also interesting in that two of them (in Beirut and in the British Library) show how a diagrammatic plan can become, under the scribe's hand, an unintelligible pattern of abstract design.
Nothing is known of Muristus, and the graphic similarity of his name in Arabic to Qatasibiyus (Ctesibius) was pointed out by Farmer (D(i)1931); Muristus appears to have been a Greek (or Byzantine), and in any case derived his descriptions of instruments directly from Ctesibius's Commentaries. But neither of them is a true organ. The first contains a chest of 12 pipes fed with wind from the lungs of four men blowing through tubes into a regulator; the weight of the pipes compresses the wind; the pipes themselves appear to be reeds, all of the same length but of varying diameter and requiring different volumes of wind; the wind is admitted to each pipe through a valve, presumably one worked by some kind of key. This seems to be the instrument of ‘formidable power’ referred to in the ‘Letter to Dardanus’ once attributed to St Jerome. The second or ‘Great’ organ is a signal-organ perhaps not unlike the (smaller) magrepha and containing a siren pipe or pipes blown at great pressure, used in battle by the Greeks, according to Muristus, or for similar purposes by other Middle Eastern peoples. The siren worked on the same principle as the hydraulis, four pumps or cylindrical bellows providing wind pressurized by water in a cistern.
There is no evidence that the organ became known again in western Europe through the cultural activities of the Arab caliphate of Córdoba in Spain. But the possibility that this might have been the case adds further importance to any work undertaken on this period in Iberian musical history, for links may perhaps be discovered between Spanish–Arab instrument making and 9th-century Benedictine musical life. In the eastern caliphates organs seem to have developed into mere ingenious automata; but even in that state the Eastern organ seems not to have survived the fall of Constantinople in 1453.
Organ, §IV: The classical and medieval organ
The gift organs of the 8th and 9th centuries were Byzantine organs, called ‘organum’ in the chronicles and still perhaps regarded as an ‘engineering contrivance’ rather than musical instruments. The fanciful clock given to Charlemagne in 807 by an envoy of the Persian king was Arabic; the Venetian priest Georgius, sent to Aachen in 826, was possibly trained in Byzantium. Several Western writers from the 8th century to the 13th knew of the Greco-Roman organ but in most cases from vague written sources from which even the more astute authors got the impression that the pipes were made to sound by water rather than by air – an idea sustained by the Jesuit amateur physicists of a later century. The well-known picture in the Utrecht Psalter (fig.25) of a hydraulic organ with two players and four alternating pump blowers is also based on a misunderstanding of the Mediterranean hydraulis. Many of the early church writers refer to organs in such hyperbolic or apparently unreal terms that their sources of ‘information’ must have been in most cases literary. It is even possible that such references to organs with 100 pipes, like that of St Aldhelm, were mistaken allusions to hydra, the 100-headed monster whose name is the same as a documented abbreviation for the hydraulis. All ecclesiastical references to organs before the 10th century are to be treated with caution, and even scepticism.
All these organs were secular. One of the great unsolved puzzles of music history is how and why the organ came to be almost exclusively a church instrument in western Europe from about 900 to about 1200. The early church was subject to two particular influences against any instrument in church, and especially in the liturgy: the liturgy's origins in the Jewish synagogue, and Patristic resistance to anything of profane or luxurious association. By the 9th century, however, the intellectual and liturgical style of the church had changed. Like sung organum, the instrument owed a great deal to Benedictine cultural centres, not only in their literacy and scholarship but also in the opportunities which their large churches gave to the advancement of music. The monastic revival in the late 10th century must itself have been a factor in the appearance of organs, which had become ingenious objects for the use of the clergy, not the people. The organ was never officially approved or even acknowledged in any known papal or pontifical document despite the traditional legend that Pope Vitalian (657–72) introduced it. Nor, for one reason or another, are any of the references to organs placed or used in church before the 9th century at all reliable.
Organs, like tower bells later, were one of the irrelevances complained of by the new reformed order of the Cistercians, judging by remarks made by St Aelred, abbot of Rievaulx in 1166; his reference to the sound of the bellows, the tinkling of bells and the harmony of organ pipes is highly reminiscent of older reports. St Aelred also referred to the crowd of people watching this display as if in a theatre, ‘not a place of worship’, which suggests that organs were placed inside buildings, perhaps for example a large Benedictine church. But all this does not necessarily indicate that an organ was used during the service, nor even before or after the service. Perhaps it was rather an object of curiosity, like a cathedral almanac clock. Other 12th-century sources imply more clearly that an organ was used in some way during the services, perhaps for signalling purposes, like bells at the Elevation.
Whether organs were used liturgically is not clear from the many 9th- and 10th-century references to them. The notice describing the consecration in 972 of the Benedictine abbey of Bages, Spain, for example, makes it clear that an organ played near the entrance, ‘praising and blessing the Lord’; but to surmise more is conjecture. Much the same could be said for the archiepiscopal coronation at Cologne Cathedral in 950. Pope John VIII (872–82) wrote of an organ required ‘for the purpose of teaching the science of music’, for which it remained useful to scribes writing about and teaching musical proportions, for example at Benedictine centres such as Fleury and St Gallen. The practical function of organs set up by, or in memory of, great abbots or landowners is unknown; reference to organs used on feast days (e.g. in the Life of St Oswald, 925–92) suggests if anything that they were extra-liturgical, a kind of church carnival object. The Benedictine abbot Gerbert (Archbishop of Reims, 991–5) was said by William of Malmesbury to have had a hydraulic organ put into the cathedral: an object of mechanical ingenuity, once again coupled with a clock in the written account. Gerbert may have learnt the principles of the hydraulic organ from the Arabs in Córdoba, where he lived for a time, since Benedictine manuscripts of the period do not suggest any practical familiarity with the writings of Hero or Vitruvius. Nothing is known of other 10th-century organs, such as that set up in Halberstadt Cathedral under its Benedictine bishop Hildeward; nor are contemporary references such as those of Notker Balbulus (d 912) helpful towards an understanding of the nature and purpose of organs. So many of these writers were merely indulging in metaphor.
One detail of the Bages consecration of 972 was that the organ music ‘could be heard from afar’, which may or may not imply that the organ was outside the church. But a large number of references, second-hand or glossed though many must be, suggest that the organ was a loud instrument by standards of the day. Is it possible to see the famous late 10th-century organ in Winchester Cathedral as a signal-organ, used on feast days to summon the congregation or overawe them (perhaps before or after services)? This does not preclude its having keys and some musical potential; ‘signal-organ’ simply describes its loud tone. If the Winchester organ was placed near the west or south door (stone screens were not known until the next century, and at Winchester only the nave may have been capacious enough) its use could hardly have been liturgical. Nor is it easy to see how an organ could have been liturgical in a much partitioned church of the type known to the later Cistercians.
The Winchester organ was built by about 990, some decades after the Benedictines were fully established there and later than modern commentators have said. Details of it appear in a fanciful verse letter written shortly afterwards by the monk Wulfstan. Much quoted, much translated and much misunderstood, the poem speaks of 26 bellows and 400 pipes in ten ranks, with the 40 notes arranged as two sets of 20 keys played by ‘two brethren of concordant spirit’ (see BicknellH for an up-to-date interpretation). Each key was a perforated slider pushed in and probably pulled out – hence the need for two or more players. Clearly some kind of organ did exist; but there are good reasons for distrusting Wulfstan's account: despite the fanciful references by St Aldhelm to what appear to be 100- and 1000-pipe organs, there are no other firm details extant of such large organs, at Winchester or anywhere else; the numbers given for bellows, blowers (70), pipes, ranks and keys are not plausible, whatever the diameter of the pipes and however the wind was raised (even the number of players smacks of literary tradition or at least of the poorly drawn hydraulis in the Utrecht Psalter); the general style and character of Wulfstan's poem are those of an impressionable layman not concerned with technical accuracy (for further details see McKinnon, D(xii)1974).
Three 11th-century sources are rather more practical than many later medieval manuscripts (see §5 below). De diversis artibus, a large encyclopedia written in the first half of the century by the German monk Theophilus, describes techniques used in making church objects – glass blowing, painting, gilding, metal forging, bell casting and organ making. The sources of his treatise leave its authenticity uncertain, the last part of it probably being a later compilation. A second 11th-century treatise is the anonymous Berne Codex, a manuscript possibly originating at the Benedictine abbey of Fleury; a third is a note by Aribo on pipe making.
Theophilus's organ (see fig.1) could be mounted within a recess in an interior wall, presumably at gallery level, with only its chest and pipes visible from the church and these indeed covered by a cloth ‘tent’ when not in use. Later 13th-century screen organs would have been equally well placed, in some cases better placed, when they came to serve as alternatim instruments in the liturgy. Many details of Theophilus's organ are unclear, not least its function in the church. Theophilus first advised his reader to obtain a treatise on pipe measurement (lectio mensurae), which would presumably contain a table of concrete values or actual pipe-scales, rather than mere Pythagorean ratios. The copper for the pipes was first to be beaten very thin, then shaped around a gently conical mandrel, which suggests that foot and resonator would be all of one piece, having the shape of a modern Trumpet resonator; pipes of this shape are in fact depicted in some iconographic sources (see figs.26 and 27). The Berne Codex seems to suggest a more familiar type of pipe-foot, and gives ‘almost 4'’ as the longest pipe, but does not indicate the length of the foot unit. Theophilus's pipes are equal in diameter, which may not be unreasonable in an organ of less than two octaves. In the 1980s Louis Huivenaar and Jan de Bruijn constructed conical pipes of the kind described by Theophilus, placing them on a chest based on Zarlino's 1558 description of a chest from Grado, Venice, believed to date from the 11th century, having 15 keys, two ranks of pipes, and spade-shaped keys not unlike those in fig.27. This experiment suggests that the conical pipes had a strong and complex overtone content, producing an extraordinary vocal quality and seemingly well suited for playing a chant melody.
In his section on forging Theophilus described bellows, and from other sources of the period it seems that such bellows were large, capacious, and planned to compensate for leaks between feeder and pipe. The feeders direct wind into a conflatorium or receiver, shown in some 11th- or 12th-century miniatures such as the Harding Bible (fig.26) and Cambridge Psalter. In the Berne Codex the valve preventing the return of wind when the bellows are refilled is placed in the collector, while Theophilus's valve is in the head of each bellows. The main duct can be curved or straight (but perhaps not mitred) and is usually shown as generously proportioned. The keys of the Berne Codex organ closely resemble Hero's, consisting of a ‘square’ depressed at one end, pushing in a perforated slider (to which it is attached) at the other, and pulled back by a horn-spring to which it is tied. By the 13th century, according to a miniature in the Belvoir Castle Psalter (fig.27), organists were using their fingers separately (and rather elegantly) to depress the keys, which in this miniature were broader and more substantial than some reproductions of it suggest.
Organ, §IV: The classical and medieval organ
In the absence of any known organ remains between the 3rd-century organ of Aquincum and the (?) late 14th-century positives of Sweden (see §6 below), historians must turn to the body of ‘medieval organ pipe theory’, readings of which have led to some misleading ideas about medieval organs. The many sources have been seen as ‘treatises on organ building’ (Frotscher, D(i), 1968; Mahrenholz, C1938; Fellerer, D(i)1929) or ‘treatises on pipe measurement’ (Perrot, D(i)1965); but after 1966 researches into the now completely collated texts (see K.-J. Sachs, C1970–80) have led to a new assessment of their purposes.
The texts, in some cases only a few sentences in clerical Latin, fall into three main categories. The largest group (about 30 texts in 155 sources from the 10th century onwards) are those concerned with the length of organ pipes calculated by ratios from an ‘initial’ pipe, itself of no specified length; most of the length measurements take account of End correction which, in the case of a row of pipes of the same width and mouth shape, is constant. A smaller group of texts (11, in 11 sources) is concerned with the width or diameter of organ pipes, ignoring end correction in calculating the length; some of these discuss the relationship of mouth width, cut-up and foot-hole to the pipe diameter; none dates from before the 14th century. Neither of these two groups covers the whole subject, since in fact variable pipe-widths and quasi-Pythagorean demonstration of end correction are mutually exclusive. The third group of texts (three only, all 11th-century) deals with technical pipe making. These texts are Theophilus's De diversis artibus (bk 3, pp.81ff), Cuprum purissimum (the Berne Codex), and the section ‘Sicut fistulae’ on pipe making from Aribo's De musica. Some aspects of the organs described in this last group of sources have received attention in §4 above.
The ‘pipe-length treatises’ rarely offer concrete usable measurements, nor do they outline any pattern of values in which practical experience may have had a hand. Instead, the scalings concern proportional values corresponding to the Pythagorean ratios known from monochord theory. On the one hand, it is obviously possible to make an organ without determining the acoustical phenomenon of pipes; on the other, no careful measuring of pipes leads to usable pitches without proper tuning. Many treatises so resemble the numerous scaling texts for the monochord and cymbala that the significance of their pipe-scalings should not be interpreted in isolation; for pipes, strings and bells might have been cited primarily as examples of Pythagorean ratios according to which a pipe approximately half as long as another will sound the octave above, one approximately two-thirds as long the 5th above, and so on. Comprehensive instruction treatises covering such matters include the works of Notker Labeo, Aribo, Engelbert of Admont, Hieronymus de Moravia, Walter Odington and Giorgio Anselmi; an important branch in the tradition was the widely known Scolica enchiriadis of the late 9th century. In no way were such sources recipes for making instruments; rather, they outlined the kind of number theory which theorists since Boethius had applied to music.
Both Theophilus and the writer of the Berne Codex were dependent on ancient accounts, namely those of Vitruvius and Hero. Aribo's account probably refers back to a manuscript tradition around the uncertain figure of Wilhelm of Hirsau, who seems indeed to have been concerned with actual pipe measurement. Most of the copies of a text ascribed to him are provided with drawings showing the scale of the first pipe (not unlike the measure line in Schlick's Spiegel, 1511). But in other writers, end correction, the very factor ‘disturbing’ the neat theory of Pythagorean ratios, was itself determined proportionally, calculated as a fraction of the diameter. For such calculation the diameter was assumed to be constant; hence the frequently repeated conclusion that the medieval organ builder made a rank of pipes all to the same diameter. Optimistically interpreted iconography has been seen to support this idea. But it should be remembered that the general medieval approach to making things (i.e. before print technology brought craftsmen gradually to depend on visual models) weighs against the practical significance of written-down treatises. Only two of the texts cover organ building as such, and they are partly derived or even (in the case of Theophilus) the result of a compilation. Moreover, practical details such as the remark in the Berne Codex that pipes follow the modern diatonic genus (‘si … sit diatonicum genus quo maxime decurrent moderne cantilene’) do not necessarily indicate an actual organ such as might be used in liturgical music. The Sélestat manuscript (11th century) and the Berne Codex describe pipe-chests of seven notes, and the former seems to make it clear that its three ranks are unison, octave, unison; at the same time, an 11th- or 12th-century miniature, in the Harding Bible, shows a keyboard of C, D, E, F, G, A, B, B, a set of keys showing one each of the known notes (see fig.26). But it is not known whether these treatises and miniatures reflect more than certain literate, second-hand and even non-empirical traditions passed on, perhaps indirectly, to their scribal ‘authors’.
Organ, §IV: The classical and medieval organ
Rarely in music history is conjecture taken more confidently as fact than in this area. Despite bold and apparently plausible modern assertions that playing in 4ths and 5ths was known by 9th-century clerical organists, that alternatim chants were known in the Mass during the 11th century, or that large organs played the puncti organici (and even the quicker upper parts or voces organales) in the Île-de-France organa of the 13th century, there is no irrefutable evidence to support them. It may be reasonable to assume that in the larger Benedictine abbeys (St Gallen, Metz, Benevento) polyphony, organ playing and troping of plainchant were all linked; but it is not known during which century the more cosmopolitan of the abbeys may have begun to use the organ more integrally during Mass than they were ever to use their other expensive mechanical equipment such as bells or clocks. Nor are technical matters concerning the structure of organs any more certain. There is no evidence that, between the 10th and the 12th centuries, octave- and 5th-speaking ranks were used in abundance, or that reed and stopped pipes were also known, as more than one modern writer has claimed. Much later still, basic assumptions are unreliable. Iconography by no means establishes that organists had to use all of each hand to thump the keys, at this or any point in organ history. Nor are archives less equivocal; church accounts do not prove that the ‘little organs’ sometimes mentioned from about 1390 onwards were second manuals of large organs or that, if so, such manuals were placed together or had the same pitch. The use of multiple organs in large churches is well documented from this period onward, and the ‘little organs’ usually prove to be separate instruments from the ‘great organs’. Possibly the second keyboard, up until at least the time of the Innsbruck Hofkirche organ (1550; the oldest extant two-manual organ), should be seen rather as an extension to the compass of the first. Organ research from about 1960 has been directed towards a circumspect interpretation of the evidence, and a new period of re-examination concerning the evolution of the organ is inevitable.
Certainly the period 1100–1450 was one of great activity. During the 11th century more organs are known to have been in monastic churches throughout western Europe; they were played at ceremonies (probably outside the liturgy) and succumbed to the fires that frequently swept medieval cathedrals (Canterbury 1114, Freising 1158, Merseburg 1199) – which suggests perhaps that they were fixed in place. Some literary sources imply that the organ was played during Mass, for instance the Roman de brut (c1155, Normandy):
Quant
li messe fu commensie …
Mout oissiés orgues sonner
Et clercs chanter et orguener
– but such references are vague and merely image-evoking; poets’ sources were usually other poets. More authentic sources of the 9th and 10th centuries suggest, however, that sequences as well as the Te Deum were the most open to polyphonic vocal treatment, just as later they were the movements most closely associated with the organ. A small portative and a psaltery are shown in a 12th-century miniature but no ecclesiastical function is implied, any more than for the portatives illustrating psalms in earlier psalters (e.g. the small organs hanging on willow trees at Psalm cxxxvii in the Stuttgart Psalter, 10th century). But by the 13th century all instruments other than the organ were excluded from various churches in Spain, Italy and France. The phrase ‘great organs’ is found in church documents (e.g. Erfurt Peterskirche, 1291), and by 1296 one French bishop referred to the organ sounding five times in connection with the Sanctus – perhaps as a signal rather than for music as such. There is no evidence that it played the tenor in Sanctus movements or in any motet following at that point during Mass. But by the end of the 13th century secular cathedrals from Exeter to Prague, Barcelona to Lübeck, were as likely to have organs as the larger abbey churches. Whether erected on screens (as in England) or hanging on an upper wall of nave or quire, the organs were usually located near the cantores, i.e. no longer near the west or south entrances nor specifically near the main altar. It is not known, however, when large organs were fixed in Theophilus's manner, and illustrations for psalm texts usually show much smaller organs in ensemble. The phenomenon of the smaller fixed organ attached to, associated with, and in some cases paid for by specially bequeathed chapels belongs to the 15th rather than the 13th century.
The large organ seems to have been an exclusively ecclesiastical instrument from the 9th-century Western Church to 17th-century Italy. Probably by the late 13th century the cathedral or abbey organ was occasionally used in alternatim music with the cantores, though presumably not with the congregation itself. Jovannes de Florentia referred (c1350) to performance ‘partim organo partim modulatis per concentum vocibus’. Early 15th-century keyboard repertory extant in the Faenza Codex (I-FZc 117; see Sources of keyboard music to 1660, §2(i)) complements such explicit references as the mid-15th-century Castilian rubric ‘the organs played one verse and the clerics sang the other’. 14th-century documents usually suggest that whatever the organ played, it did so on traditional church or local feast days, for example at Halberstadt Cathedral on Christmas Day, for Easter Week, Sunday after Easter, Kreuzerfindung, Reliques of St Stephen, Ascension, St Peter and St Paul, Dispersal of the Apostles, Mary Magdalene, St Stephen and St Sixtus, Assumption, Patron, Nativity of Mary, St Michael, St Gall, All Saints and 12 other feast days including Trinity and Annunciation. For three centuries organs were used only on feast days. But by the end of the 13th century some churches had decreed against other instruments (Milan, 1287); by the 14th, alternatim performances took place, especially in the Office; by the early 15th, many areas, such as the Upper Rhineland, north-central Germany, some English and Italian cities, and the stretch from Rouen to Utrecht, had organs in most of their larger churches, and the future of the instrument was completely assured.
It is impossible to trace this history step by step, despite a certain amount of archival, musical and iconographical evidence. But certain general points can be made about the 14th and early 15th centuries. Organs became known in cathedrals less as an exception and more as a norm; by 1425 the large positive (with front pipes arranged from left to right) was usually distinct from the fixed church organ (with front pipes in mitre form with a set of larger pipes to each side, thus requiring a rollerboard). All the evidence suggests that only open metal flue pipes were known, though some commentators have seen such references as ‘plom … per las horguenas’ (church of the Cordeliers, Avignon, 1372) as evidence that lead pipes were used for distinctive tone-colour; lead was in fact the most common pipe metal in all countries during this period. Larger organs in certain areas (Normandy and later the Netherlands, possibly England also) occasionally had Trompes during the period 1390–1450 (i.e. a set of ten or so large open metal Bourdon pipes, possibly played by a separate manual or pedal keyboard and placed to one side, or both sides, of the main organ). Presumably they also had a Blockwerk, although apart from the number of pipes in a few famous examples (e.g. 2000 at Amiens in 1429) little is known in this regard before 1450. Presumably the pitch of their compass, whether from (apparent) B or any other note, was roughly equivalent to men's voices, the total compass perhaps divided up and distributed over more than one keyboard. However, so many significant unknowns are raised by such summaries that describing the church organ before its more clearly defined types of 1450 is mostly a matter of citing facts about individual instruments.
The organ at Sion, Switzerland, is usually dated about 1380 (although it may in fact be later) and has been much rebuilt. Despite opinions expressed on its tone, and although some of the original pipework seems to be incorporated in the present organ, nothing is certain of its original sound, disposition, compass, pitch, voicing, pressure, bellows, position, purpose or provenance. Nevertheless, its case (fig.28) shows interesting elements: it has the typical shape for such instruments, with the central mitre lines (like Arnaut de Zwolle's organ at Salins); the castellated ‘towers’ to left and right overhang the sides; and the wings (painted and perhaps made about 1434–7) enclose the pipes completely. At Bartenstein in East Prussia parts of an organ dated about 1395 existed before World War II. The organ had a large chest for 27 keys (?FGA–a') with three divisions for a large chorus of nine (bass) to 21 (treble) ranks, case-pipes of 16', and Principals 8' + 4'. An ingenious reconstruction of the chest was sketched by Karl Bormann (D(xv)1966) but little is certain, particularly the stop mechanism whereby wind was admitted to chorus and principals at will; perhaps the device was made not in 1395 but one or two centuries later. The organ at Norrlanda (c1380), now pipeless and in the State Historical Museum, Stockholm, is a large positive with a putative Blockwerk of three to six ranks. A set of 12 rollers conveys not only both pedal and manual key-travel to the larger pipes held in small side towers but also the action of certain pairs of keys (C/c, D/d, F/f, G/g) to a single pallet. This is so sophisticated an arrangement, not least in its resulting chromatic keyboard of nearly two octaves (C–a or c–a'; fig.29; for a close-up view of the keyboard, see Keyboard, fig.1), that doubts too must arise about the age of the organ – which in any case appears to have case-work constructed out of panels from some older choir stalls. An organ of surprisingly similar appearance is depicted in the mid-15th-century stained glass of the Beauchamp Chapel, St Mary's, Warwick.
Extant 12th- and 13th-century church accounts merely record the presence of an organ; about many areas of Europe, curiously little is known. Only during the 15th century were the great Gothic churches of some areas constructed (e.g. in the Netherlands), but many were immediately provided with an organ as part of the regular furniture. The first real details of church organs occur in such documents as builders' contracts from about 1390 onwards, when for reference purposes the anonymous scribe would distinguish the ‘opus maius’ from the ‘parvum opus organum’ (Utrecht Cathedral, suggesting either two separate organs or an organ with a Rückpositiv) or the ‘principaulx’ pipes from the Bourdons (Rouen Cathedral, suggesting Trompes and other major Fourniture ranks), or even by 1420 ‘cinch tirants’, suggesting five separate stops in a large positive (Aragonese royal chapel). Otherwise it was enough for an organ to be entrusted to the craftsmen concerned, who had merely to see that it was ‘decent, good and to the honour’ of the church (S Giovanni Evangelista, Venice, 1430).
Henri Arnaut de Zwolle, writing in the 1440s, described several organs he knew, including those at Salins (c1400, Blockwerk of 6–15 ranks) and Dijon (c1350, 8–24 ranks); an account of his treatise is given below (§V, 1). The most famous 14th-century organ is that of Halberstadt Cathedral (c1361, rebuilt 1495), described in some detail by Praetorius (Syntagma musicum, 2/1619). The four keyboards were as follows: I, called Diskant by Praetorius, playing the plenum (case pipes + Hintersatz Mixture; see Full organ), B–c' (14 keys); II, also called Diskant, playing case pipes (Prinzipal) only, same compass; III, called Bassklavier, B–a (12 keys, long protruding levers perhaps worked by the knee, playing the 12 large bass pipes); IV, pedal keyboard, same compass as III, used with (perhaps pulling down the keys of) the top manual. The largest rank of pipes was at the equivalent of 32' pitch, the total number about 1192, from 16 ranks at pedal B to 56 at top manual a'.
Praetorius by no means understood the historical nature of such old organs, nor is it clear from his report what in the Halberstadt organ dated from 1361, what from 1495. But it is probable from his account that the Blockwerk had multiple ranks of octaves and 5ths such that the manual disposition was approximately as shown in Table 1. From the details given, the pitch level seems to have been a' = c505. Praetorius also described the sound of this Blockwerk (see Blockwerk). 20 bellows supplied the wind, all presumably needing to be operated for the plenum, though his drawing shows only two operators (see Keyboard, fig.2).
B-e |
16.16.8.8.8.51/3.51/3.51/3.51/3.4.4.4.4.4.22/3.22/3.22/3.22/3.22/3.22/3. |
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2.2.2.2.2.2.1.1.1.1.1.1 |
f-c' |
16.16.8.8.8.8.51/3.51/3.51/3.51/3.51/3.4.4.4.4.4.4.22/3.22/3.22/3.22/3 |
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22/3.22/3.22/3.2.2.2.2.2.2.2.2.1.1.1.1.1.1.1.1.1.1 |
d'-a' |
16.16.8.8.8.8.8.51/3.51/3.51/3.51/3.51/3.51/3.4.4.4.4.4.4.4. |
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22/3.22/3.22/3.22/3.22/3.22/3.22/3.22/3.22/3.2.2.2.2.2.2.2.2.2. |
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2.2.2.1.1.1.1.1.1.1.1.1.1.1.1.1.1 |
Praetorius gave other details about organs he described as old, and his suggestions could be the starting-point for organ historians. For example, he guessed that semitones appeared in keyboard compass from about 1200 and pedals from about 1220, that by 1450 only open pipes were known, but that spring-chests had been built by about 1400 and separate stops by about 1250. The first date is late by two centuries if it is a question of B only, perhaps a reasonable guess if intended to refer to the first ficta semitone (i.e. other than B), but early by at least one century if all five semitones were meant. The date for pedals must be about a century too early. The date for open pipes is probably correct, and that for spring-chests could be correct but is probably a little early. The date for separate stops seems early by at least two centuries if it refers to a full-size church Orgelwerk. Other details given by Praetorius are more certain, for example that some keys were as broad as about 60 mm, that some keyboards had a compass of B–f' or c–a' (diatonic only) and the curious-seeming statement that some early pedals played only the bass notes. Obvious though the last may appear, the large Bourdons or ‘teneurs’ (Notre Dame, Rouen, 1382) may in fact often have been operated by a keyboard played by the hands or even by the knees. The term ‘teneur’ is evocative, but what it signifies is uncertain; perhaps the keys played the long notes of a vocal composition or an Intavolierung; perhaps ‘teneurs’ meant merely large pipes as distinct from small (‘menus’ at Rouen, 1382, ‘Diskant’ in Praetorius). Certainly the playing of a cantus firmus en taille on the pedals is a later speciality of the 16th century. But whatever ‘teneurs’ was meant to imply, builders of the period knew well how to fashion pipes of various sizes and scale, according to Praetorius.
At the end of the 14th century, then, a large organ within the area Rouen–Utrecht–Magdeburg–Orvieto might be presumed to have had a Blockwerk of anything up to 80 or more ranks with open cylindrical pipes of metal, played by a broad-keyed manual of 16 to 22 notes, possibly with a further keyboard playing Trompes with or without their own chorus mixture, and exceptionally with a second smaller organ in some way connected with the first. Smaller but independent organs may have had, by custom, a longer compass, smaller keys, and a Blockwerk of fewer ranks. Not enough is yet known for generalizations to be made about the organ of about 1390 outside the region specified above.
Organ, §IV: The classical and medieval organ
Although the Positive and the Portative each form virtually separate subjects, they offer a useful gloss on organ history at this point because each demonstrates a striking uniformity unknown to the larger fixed organ, and each demonstrates the limitations of iconographical evidence. Portatives were small portable organs blown by bellows (often single but sometimes a pair) operated by one of the player's hands (usually the left), and played by his other hand on a keyboard of up to two octaves, composed often of touch-buttons; the instrument would have one rank of pipes arranged in one or two (very rarely three) apparent rows. Such are the highly detailed and prettily finished portatives depicted by such painters as Memling (three examples, that at Bruges being the clearest: for illustration see Portative) and the Master of St Barthélemy (two examples). Positives were blown by a pair of larger bellows operated by a second person (fig.31), and were played by both of the organist’s hands on a more or less chromatic keyboard exceeding two octaves (usually beginning at B) and composed of short finger-keys; two rows of pipes would form one complete rank, often with Bourdon (or drone) pipes pitched in the bass, perhaps an octave below. Some portatives also had (shorter) Bourdon pipes. In all known cases the pipes were open and of metal; the scaling is progressive and the diameters diminish, at least in the better depictions; cut-ups often appear low and the scale narrow; unless chords of more than two notes were played, the wind supplied by the hand bellows must have been quite adequate, though presumably low in pressure.
That paintings always leave problems of interpretation may be demonstrated by one of the best-known of all organ paintings, the Van Eyck altarpiece at Ghent (1432). Despite the beauty and apparent precision of the picture, the pertinent section of which is reproduced in fig.32, there are several puzzles. The front pipes, though painted well, are not placed naturally; the tips of the feet rest right at the front of the chest top-board, while each pipe corpus, whatever its diameter, passes behind the supporting brace, itself, however, of constant thickness. The feet of the inner row of pipes are placed almost without depth of perspective, all exactly in the middle of those of the first row – despite the latter's perspective. Unless the keyboard ran no higher than appears (blocked by the player's hand and arm) the two rows of pipes must produce only one rank; yet if the keyboard continued up symmetrically (as far to the right as the bass goes to the left) the organ would have at least 35 keys, implying a unique pipework of two non-chromatic ranks. The line made by the pipe-tops corresponds neither quite to a diatonic nor to a chromatic tuning, and the pipes in the bass seem unnaturally narrow in scale. Apart from these problems of depiction, the painting gives no information at all on certain points, such as the purpose of the latch-key on the lower left; if it is for a Tremulant, one might expect other evidence of the period for such stops; if it is a stop mechanism operating a valve to the rear chest, one must assume that there are other pipes not seen but making up the second rank; if it is a key to operate Bourdon or drone pipes, the pipes should be in evidence. Such questions can be answered plausibly enough, but only by conjecture, for comparisons with other instruments are too distant to be useful.
While much research remains to be done for the beginning of this period, especially on developments in German organs of the area Mainz–Nuremberg–Innsbruck–Basle, a provisional historical sketch can be derived from Henri Arnaut’s treatise and from certain documents relating to church contracts concerning organs of about 1450. From the 17th century onwards much more complete documentation is available.
1. The treatise of Henri Arnaut de Zwolle.
3. Arnolt Schlick’s ‘Spiegel der Orgelmacher’.
4. The new potential of the 16th century.
5. Structural developments c1600.
7. The French classical organ.
9. The Baroque organ in the Iberian Peninsula and Latin America.
10. The 18th-century Italian organ.
12. Splendours of Europe, 1650–1800.
Although concerned primarily with small organs, Arnaut’s treatise (F-Pn lat.7295; ed. and facs. in Le Cerf and Labande, B1932) throws much light on the potential which organs were seen to have by 1450. The treatise was written in Dijon between 1436 and 1454, partly by Arnaut, a Dutch polymath at the Burgundian court of Philip the Good, and partly by two other authors or scribes. It reflects a lively cultural exchange between Burgundy, Paris and the Low Countries. Arnaut’s remarks are more practical than those of any treatise since the 11th century. His description of an organ pipe is empirical and systematic; details suggest a scale some ten semitones narrower than Normalmensur at bass B but some seven semitones wider than Normalmensur at a hypothetical treble b''. The mouth width is about a quarter of the circumference (2/7 for bigger-toned pipes), the cut-up a quarter of the mouth width; the foot-hole diameter of a quarter of the pipe width was large, though easily reducible. From the measurements it is unclear whether Arnaut was working from two pitches of a' = c395 and a' = c435 or from a mean tonus cori of a' = c415. Two portative or positive chests (‘ciste portivorum’) are drawn and described. In one, a single rank of pipes for the compass b–g'''a''' is arranged ‘ad modum mitre episcopalis’ (i.e. like a bishop's mitre, tallest pipes in the middle); in the other, a rank for the compass b–f''' is arranged in the chromatic manner, tallest to left, shortest to right (‘ciste communis’ or ‘the usual chest’). Arnaut also drew the front of a standard larger organ of the Sion type, probably the instrument at Salins (Salin, formerly in Burgundy), whose 4' Blockwerk he later specified as B (6 ranks)–f'' (21 ranks).
On f.127 of Arnaut’s manuscript occurs the first incontrovertible reference in organ building to reed stops. On a page of scarcely 20 words (and ten figures) apropos the ‘scales … of the pipes in the church of the Dei custodientes’ occurs the phrase ‘l’anche de F’, which apparently refers to the reed and block of a reed pipe. Arnaut seems to be saying that a rank of such pipes from B to b' needs eight different sizes of block but gives no other details.
Of the organ of about 1350 in Notre Dame, Dijon, Arnaut noted that the pipes (B–a'') are already old and corroded; the pipe mouths were generally about half an octave too narrow, in his opinion. The Fourniture is mentioned, apparently the only separable part of the plenum. The total number of pipes in the organ was 768; the leather bellows (?c1350, ?c1440) had three folds and measured c160 cm by c70 cm. Arnaut also gave in tabular form the disposition of four different Blockwerke, one of F (8 ranks)–e''' (21 ranks), two of B'–f'' (6 to 21 and 6 to 15 ranks respectively) and one of B'(10 ranks)–a'b' (26 ranks). The first has three categories (Principal, Cymbale, Fourniture), suggesting ‘stops’ made to play separately by two manuals or perhaps by some mechanical device (possibly a divided chest operated by a Sperrventil). The Principal 8' has four ranks at the top and the Fourniture 14 (making 8.8.8.51/3.51/3.4.4.4.4.4.4.4.4.4); the Cymbale is nothing less than a three-rank Terzzimbel, indeed the first documented mixture containing a Tierce rank. The Cymbale repeats (i.e. breaks back to lower pitches), 29.31.33 at B, 8.10.15 at e'''.
One of the other three organs was apparently that at Salins, which had a long-compass 4' Blockwerk of:Even more important, perhaps, is that Arnaut’s Fourniture is not an accumulative Blockwerk but a Mixture that breaks back to lower pitches in the upper octaves.
Arnaut referred also to the 12 ‘fistula[e] tenoris’ at St Cyr (probably Nevers Cathedral), i.e. 12 Trompes or bass pipes, half as long again as the lowest ranks of the chorus. Unlike the other Principal pipes, these pipes had no accompanying Fourniture pipes of their own, and were thus presumably played from a separate keyboard and chests. At the church of the Cordeliers (?Dijon), the ten ‘subdupla tenoris’ pipes had a separate keyboard which could couple with that of the chorus, thus affording three effects: the usual chorus, the chorus + tenor or Bourdon pipes, or tenor pipes played by the left hand while the right hand played the chorus or discantus. It is unclear what Arnaut meant by ‘double Principals’ (‘duplicia principalia’); did this mean that only the 8' stop was doubled (two open ranks, or one open and one stopped rank), or that all ranks of the principal chorus were doubled? The reference to ‘double principals’ in the 1519 contract at All Hallows, Barking-by-the-Tower, London, is similarly obscure, although the recent discovery of two early 16th-century English soundboard fragments (analysed in BicknellH), strongly suggests the latter. If this is so, then ‘Principal’ in this context simply meant chorus or plenum – a hold-over from the earlier period when it referred to the Blockwerk (as at St Sebaldus, Nuremberg) – but with the exception of the ‘bassys or diapasons’ (corresponding to Arnaut's tenor, or the Flemish Trompes). The ‘simplicia principalia’ of the Dijon court chapel organ was described by Arnaut as ‘in duo divisa’, which may mean either one halved rank (with treble and bass stops) or the usual paired Principals separated off, perhaps by a slider. Two quints and an octave gave the organ a total of five registers, possibly with five push–pull slider-ends.
Further light is thrown on Chair organs (‘tergali positivo’). Arnaut described one with 195 pipes, FG–f'' at 4' pitch and a four- to seven-rank Blockwerk of octave ranks only. The front pipes were of tin, the others of lead; the measurements of neither the mouths nor the foot-holes were systematic or regular in the particular Chair organ Arnaut was referring to, and he was puzzled as to why it nevertheless sounded well.
Though never completed, and although it appears to be more indebted to earlier writings than was previously thought, Arnaut’s draft treatise stands as something unique in organ building, not least in its description of certain Blockwerk or plein jeu choruses. During the whole of the next century no source was to describe in such detail how an organ builder could plan his chorus. Contemporary documents, like modern histories, prefer to dwell on the new colour stops and other, essentially secondary, effects.
Not only do Arnaut’s remarks give a partial picture of the organ at this period, but contracts and other documents from other areas of Europe give corroborating details. Thus the organ at St Sebaldus, Nuremberg (by Heinrich Traxdorf, 1440–41), had Principal, Fourniture and Cymbale, perhaps of the type described by Arnaut. Such a division of the chorus became a kind of norm, not only at Nuremberg but also at the Florinskirche, Coblenz (1467), St Georges, Haguenau (1491), Weimar (1492), St Peter, Basle (1496), Leuven (1522) and in organs farther west. Yet it seems that the instrument of 1474–83 in S Petronio, Bologna, already had a large-scale, 50-note complement of nine single-rank stops (smaller in all respects than the organ as it now is), thus presenting a quite different tradition of organ building in the south.
Clearly the crucial questions are: how were stops separated, giving the organ different colours or effects, and why did builders of some areas give an organ several manuals while those in others concentrated on one manual? As to the second question, it can only be conjectured that southern builders learnt earlier than northern how to obtain musical variety from an organ with one keyboard, separate ranks and a long compass (e.g. the 53 or 54 notes at S Martino, Lucca, in 1473); and that northern builders, requiring only a few different effects (Diapasons alone, or the plenum), found that two or even three shorter or unequal keyboards with one or two registrations each were more useful and probably more powerful. Division of an organ into several chests was practical from the point of view of wind supply. As to the first question of how stops were separated, the situation is clearer. Several documents from the mid-15th century onwards refer to the varieties of sound achieved by a particular organ: Arnaut used ‘registra’; references in church archives include ‘registros’ (Treviso, 1436), ‘tirans’ (Aragon, 1420; Barcelona, 1480), ‘division de veus’ (Perpignan, 1516), ‘dreen gelueden’ (‘three sounds’, Grote Kerk, Zwolle, 1447) and even ‘a la moderna cum registri sei’ (‘with six stops in the modern manner’, Catarro, 1488). How were these varieties achieved? ‘Registers’ and ‘tirants’ (even five ‘registres sive tirans’ at Avignon in 1539) certainly suggest slider-chests (see fig.3b). After all, the Roman organ of Aquincum had latitudinal sliders, and its keys admitted wind to the pipes by these means. Longitudinal sliders running the whole length of a rank of pipes were different only in application, not in principle. However, when and where stop-sliders were first made is not known; no doubt they first appeared on small organs. A further system, the spring-chest (seefig.3c), was reintroduced in the Netherlands about 1520 to give greater reliability in larger organs, but was already known in Italy during the previous century: Orvieto Cathedral is said to have had an organ in 1480 with two spring-stops and two slider-stops. The most common 15th-century arrangement, particularly in the area from Rouen to Zwolle, was the ‘double chest’, useful especially for Chair organs. In such a chest the channels were divided into two parts, front (case pipes) and back (Mixture or Hintersatz), each with its wind box, the back one of which was provided with a shut-off valve allowing the Mixture to be taken off. Evidence for such chests is fairly clear from several Dutch contracts of the period (Zwolle, 1447; The Hague, 1487).
Much less clear is the origin of stopped pipes, although it is thought that the ‘double Principal’ of late 15th-century organs could imply an inner rank of stopped pipes sounding with the open case pipes, as well as multiple doubled ranks. ‘Coppel’ was a name used at first probably for case pipes (Limburg, 1471), later for stopped unison pipes (Bienne, Switzerland, 1517). Much the same may be said about the term ‘Flotwerck’ (Bassevelde, 1481). The ‘lead pipes’ for inner ranks referred to in contracts of many languages and areas have also often been assumed to be stopped pipes, but both documentary evidence and surviving Gothic pipework suggest that in many organs all interior pipework, including open pipes, was of lead. The Quintadena is a stopped metal rank sometimes referred to as Schallpfeifen early in the next century; it is possible that the emphasis on new organ colours at this later period was responsible for stopped pipes in general. Thus the stopped wooden Holpyp is authenticated from about 1500, but hardly before. Schlick (B1511) was still ambiguous about stopped pipes; even Flute stops at that period (e.g. Bordeaux, 1510) were open, as indeed they remained in Italian organs of a later century.
To sum up, in 1500 the average organ in northern Italy or southern France could be expected to have a chorus of ten or so separate stops, probably achieved with a spring-chest if the organ was somewhat large, with sliders if smaller; the upper ranks may have been duplicated here and there. Spain, at least in cities influenced by Flemish or ‘German’ builders (Barcelona, Valencia), followed more the transalpine organ. The bigger instruments of the Netherlands and Rhineland had two or even three manual departments, in most cases each with its own keyboard but all at the same (or octave) pitch. The English organ, judging by the All Hallows document of 1519–20 (see §8 below), was of the smaller Flemish kind: although it is possible that in secular or aristocratic circles Italian organs were known, all evidence points to the major influence in England being Flemish.
Some examples of organ schemes at their best before the turn of the century are shown inTables 1, 2 and3. That such schemes were distinctly regional can be seen in a 1000-pipe instrument built by the German Bernhard Dilmano at Milan in 1464–6, probably a large northern organ of Principal, Mixture, Zimbel etc. The instrument was updated in 1487 but still had only eight separate stop-levers in 1508. However, it is not known how many ranks of a native Italian organ of 1475 would be separate (as in later Italian organs). As to the sound of such organs, only conjectures can be made, even when much of the original material still exists, as it does at S Petronio, Bologna (conservatively restored in 1982). Although some contracts make it clear that specific sweetness or strength of tone was often required, much – perhaps too much – can be read into the use of words like ‘lieblich’ or ‘süss’ in early documentation.
Against the background of the special effects demanded of new organs and promised to their clients by the builders, for example the Schwiegel, Waldhorn, Quintadena (Scheelpipen), Trumpets, Shawms, Zinks, Rauschpipe, Drums and ‘other unusual stops’ promised by Hans Suys at Antwerp Cathedral in 1509, Arnolt Schlick wrote a splendid, forthright little book on organs, publishing it in 1511 under imperial auspices and indeed apparently intending it as a kind of standard code of practice for organ builders in Maximilian’s empire. Schlick lived in the central Palatinate court town of Heidelberg, and no doubt his influence was wide. The organ described in his Spiegel contained about 15 stops, ‘not too many of the same type’, as shown inTable 4. Schlick said that, in addition, the Hauptwerk might contain a Krummhorn and the pedal a Klein Octaff and Zymmel, but that the latter two do not belong there. All stops should be playable separately so that the pedal if required could take the cantus firmus. The Hintersatz should not contain the very low ranks of the ‘large Mixture’ (by which he may have meant the old Blockwerk), nor the ‘low-pitched 3rds and 5ths’ sometimes met with. There is little point in making separate 51/3' stops, while the addition of various little chests such as Brustwerke merely increases cost and produces ‘much sauce for little fish’. Reeds are not unreliable if properly made, and Schlick thought a competent organist could soon learn how to make the necessary minor adjustments to them. Stop-levers (preferably not push-pull) should be conveniently placed, not too long or too heavy to work from the keyboards.
Thus Schlick knew an organ of Principals, Mixtures, flutes and reeds; two manuals and pedal; probably a manual coupler; different open metal pipe scalings (circumference to length 1:5, 1:6 or 1:7); and conical metal pipes, but not, evidently, stopped pipes or wooden ones. He recommended a compass of F–a'' and a pitch level about a tone lower than that of today (his a' = c374–92, depending on the diameter of the pipe). The pipe metal was pure (or mostly pure) tin and the Principal was doubled (two open metal ranks of different scale). While recommending an irregular tuning with an A that could also serve (if ornamented) as G in a cadence on A, Schlick recognized that some preferred a regular mean-tone temperament (with major 3rds slightly larger than pure), but saw little use for split sharps as a means of dealing with problems of temperament.
Some of Schlick’s general attitudes to organs are informative. He felt that eight or nine stops in the Great were all that were needed; they should be clearly different in tone; and the second manual was to be regarded as a kind of small positive, in no sense a match for the Great. The organ was used in connection with the liturgy, he observed; the priest at the altar was given notes for most mass movements from the Gloria onwards. And since the organ had a particular part to play in such music as sequences, it was placed near the choir for convenience. The pedal may have been transmitted from the Great; certainly it should have stops of the same pitch as the main manual. The pedal must have separable stops like the Great; it should not be made up only of suboctave stops, as it then inverts the harmony. (This must presumably be a double reference to organs with extra large pedal pipes always sounded by the pedal keyboard, and to the practice, then probably rather new, of using the pedals to play inner tenor or cantus firmus lines.) Reed stops can be made well (some are mentioned that sounded new though nine years old). As to Mixtures, neither those consisting of 5ths and octaves nor those of 3rds and 5ths should contain low-pitched ranks. The full chorus should be able to play chords (that is, the 5th ranks in Mixtures should not produce too dissonant a sound when the 5th C–G or the 3rd C–E is played); at the same time, the precise number of ranks in a Mixture depends on the size of the church. Manual keys should not be too long or short, too wide or narrow, nor spaced too far or too near; the given measurements suggest relatively stubby keys with an octave span about the same as on modern instruments.
Some of Schlick’s own music in Tabulaturen etlicher Lobgesang (1512) is contrapuntal in a way that closely anticipates later organ chorales which use the theme imitatively in three or four parts; in such pieces the pedal took the tune when it appeared in the bass. Schlick also knew pedal playing in two, three and even four parts, as well as pedal runs; for none of these functions would the old Trompes have been useful. The inner-voice cantus firmus technique, however, apparently requiring pedals for music from the Buxheim Organbook onwards, should not necessarily be taken at face value: such organ ‘scores’ must often have been open to various interpretations or playing methods, and what appear to be third-staff pedal parts in the Buxheim Organbook may (at least in some instances) simply be an easy way of avoiding part-crossing problems.
The largest chapters of the Spiegel are concerned with tuning (see Temperaments, §3), the making of chests, and the bellows. Schlick’s advice is always very practical; for example, the wind must be generous (presumably for homophonic textures on full organ), the organ constantly played (even during Advent and Lent), and only the best and most experienced builders trusted. The little book thus surveys the whole field of organ activity – building, playing, composing – and even the long chapters on chests and tuning are full of good, pithy advice. For its size and single purpose, the Spiegel has never been bettered.
Soon after 1500 organs could produce a greater variety of colour and tonal effects than ever before because they had separate stops or several keyboards, or both. Many new stops (above all flutes and reeds) were invented, and one or two extant documents of the period indicate how they were used. About 1510 in both the Rhineland (Worms) and southern France (Bordeaux), such documents contained advice (perhaps from the builder) about registration. Plena were mentioned, of course, but more interesting in view of Baroque registration were the two- or three-stop combinations; the list inTable 5 can be inferred from the instruction pour le jeu d’orgue appended to the contract for an organ built by Loys Gaudet for St Michel, Bordeaux. This organ was a southern-style instrument of nine separate single-rank stops, and within a small spectrum such ranks would yield many combinations. More instructive still are the German registrations (St Andreas, Worms; Table 6), since they concern an organ with pedal and multi-rank stops. Schlick too wanted stops drawn in different combinations, and registrations changed.
Particularly important in the documents concerning such new organs as that of Daniel Van der Distelen in Antwerp Cathedral (1505) was the implied distribution of sounds into distinct groups: principals, flutes, reeds and mixtures. From then on, such families were to be paramount. Single-rank mutations, whether scaled as principals or flutes, belonged more to southern organs at that period; but at Antwerp there were at least four reeds, all for specific colour imitations (Cornett, Bagpipe-Regal, Trumpet and Krummhorn/Dulzian). Such imitations became so important during the 16th century that both reed pipes and combinations of flue stops were used to give the desired effects; often it is not clear from a document which of the two a certain Zink, Cornet, Nachthorn or Rauschpipe was. Trumpets and Krummhorns, however, were always imitated by reed stops. It is also unclear from the documents of about 1510 whether the many kinds of flute pipes mentioned were open or stopped. In most cases it could well be that they were open and that stopped pipes were reserved for special colour stops like the Quintadena or perhaps for the second ranks backing the Open Diapasons of the case front. In 1518 Sager promised in his contract with St Mary Magdalene, Basle, that ‘the stopped pipes shall be bold and sweet [tapferer und liblich] so that they are not too puerile [nit zu kindlich] but audible throughout the church’.
During the period from 1500 to 1550 Flemish, north German, north French and Spanish organs had much in common. The Netherlanders in particular developed a mature organ of archaic features, described in Vente’s Die Brabanter Orgel (D(xxi)1958). In 1510, however, the organ of the Upper Rhineland may have been the most advanced of Europe, having (in addition to principal and mixture stops) wide flutes, narrow stopped pipes, several reeds and smaller Brustwerk chests as at Bozen (1495). As so often, very little real connection between this type of organ and the music supposedly written for it can be demonstrated; it is even difficult to understand the relation between Schlick’s own music and the organ he prescribed. The connections seen by many modern writers between a south German organ of about 1520 and the group of south German tablature sources of the same period are only speculative. In fact there was in about 1510 so much international activity between builders that national types are difficult to distinguish. Flemish builders in particular could be found working throughout Europe during the 16th century.
The early 16th-century organ was full of colour: manual reeds, regals in the Positive departments (Rückpositiv, Brustwerk), pedal reeds; Gedackt, Quintadena, Rohrflöte stops (Alkmaar, Laurenskerk, small organ, 1511); Gemshorn and Hohlflöte; Sifflöte, Schwegel 11/3' and other flute mutations. The last are very significant, often uncertain in documents but usually associated with some special colour effect and even special etymology (‘Nasard’, ‘Larigot’). Tremulants, toy stops (drums, bird calls, bells) and moving statuary were known by the end of the 15th century. The structural developments were very important, particularly the Netherlands builders’ division of the Great organ into two departments (each often with its own manual): Principal chorus and trumpets on the Hauptwerk, or main manual, and flutes, Gedackts and mutations on the Oberwerk, or upper chest. This separation ensured good wind supply, greater freedom of registration, safer chest construction and better acoustical dispersal from shallower cases. The Oberwerk was to influence, even create, the special potential in the next century of the north German Werkprinzip organ, in which each ‘department’, or Werk (i.e. a keyboard with its chest or chests), had a separate structure. Some examples typifying the schemes of about 1550 at their best, organs to which the previous developments were leading, are given inTables 7, 8, 9 and10.
In the Iberian Peninsula, organs were generally built by Italians (e.g. Évora Cathedral, 1562) or Netherlanders (El Escorial, c1580); there were scarcely distinct Iberian characteristics. Yet Évora had more Mixtures than an Italian organ, and El Escorial had its secondary manual in the form of an internal Positive (Cadireta interior) rather than a Dutch-Flemish Rückpositiv. In England organs appear to have remained single-manual instruments until the late 16th or early 17th century, although some of these, particularly in large monastic foundations, may have reached a fairly good size before the Reformation. While early 17th-century English organs had the southern characteristic of single, individually available ranks at unison and quint pitches, early 16th-century organs were more Flemish in style and appear to have had the partly divided Blockwerk scheme of north-west continental organs of about 1500. Wooden pipes, and even organs with wooden pipes only, were known in the 16th century, but there is no evidence of reed pipes having been incorporated into large church organs until the late 17th century, although small regals containing both reed (short-length) and flue pipes were much in evidence and are described in some detail in an inventory of Henry VIII’s household furnishings (see §8 below). Early in the 16th century the English organ acquired a slightly larger key compass than the organs of northern Europe, a characteristic maintained into the 18th century. The double organ with Great and Chair (Rückpositiv) division is documented from the beginning of the 17th century, and inspired the writing of a type of voluntary in which solo passages were played by the left hand on the Great against an accompaniment on the Chair, both hands usually going to the Great in the final section – the so-called ‘double voluntary’.
As the 16th-century Italian organs in Innsbruck and Brescia still exist, various subjective descriptions of their tone have been made. At Brescia (see Table 9) the average to narrow scalings (apparently untransposed) and the low pressure give a mild tone, round, rich and singing. Low pressure may also explain the absence of reed stops in such organs, or vice versa. The downward compass of Italian organs varied with the size of the church: the larger the church, the lower the compass. The top note was almost always a'', the bottom c, G or F (positives), C, G', F' or even C' (full-size organs). The 15th-century organ at S Petronio, Bologna, went to F' or G' at 16' pitch (i.e. into the 32' octave). When pedal-boards were added later to such organs, they were thought of as mechanical conveniences for pulling down the bass keys; pedal parts (beyond pedal points and cadential chord roots) do not appear in Italian or Iberian music until the 19th century. As for the pipework, only open metal pipes were included. The ranks of the separated high stops break back no higher than the pipe sounding c'''''; that is the top treble of the compass has an accumulation of ranks usually no higher than Principale 2', resulting in a kind of circumscribed, if fully divided, Blockwerk. The lower ranks are sometimes divided between b and c'. Musically, such organs had a distinct function and character. Costanzo Antegnati’s rules for registration (1608) show timbre, musical style and liturgical function to have been intimately connected; for example, the ripieno or tutti was drawn for sustained music of the durezze e ligature style, which was itself applied to such pieces as toccatas at the end of the ‘Deo gratias’. Flute stops of all pitches were da concerto (i.e. ‘for solo use’), not for accompanying motets or filling out the ripieno. The undulating Fiffaro (or Voce umana), a principal-toned rank, was drawn with the Principale alone and played slow music ‘as smoothly and legato as possible’, often with melodic snatches in the right hand (as in Frescobaldi’s toccatas), and is frequently recommended for playing in the Elevation. Some useful combinations were those shown inTable 11. At the same time, as Diruta showed, some keys (i.e. ecclesiastical tones) were associated with particular moods and hence particular registrations. He recommended 16' with Flauto 8' for the mournfulness of E minor (Phrygian); but for D minor (Dorian, full and grave) he added as alternative suggestions 16.8 and 16.16. For F major (Lydian, moderately gay) he recommended 8.4 with Flauto 4; but for G major (Mixolydian, mild and lively), 8.4.2. Equally important is that three is the largest number of stops drawn in many such lists of registrations, apart from the various big ripieni used only once or twice in a service. It is never certain how far or wide such rules apply, but much Italian music of about 1620 can be seen in terms of the older Antegnati organ, more modest though the organs of Rome, Naples and elsewhere seem to have been. The greatest developments in Italian organ building between 1475 and 1575 were rather in the design of the cases (Gothic to Renaissance; see fig.33) than in the technical or musical sphere, where there is an unusual conformity.
The 1551–61 Ebert organ at Innsbruck (see Table 8 and fig.34) is very strong in tone, neither manual proving useful for accompanying a choir. The cases are shallow (Rückpositiv less than 50 cm), the chests spacious, the organs contained in resonant wooden boxes. Since all the Chair organ (Rückpositiv) stops have close equivalents in the Great organ (Hauptwerk), yet at only 4' pitch (as so often during the 16th century and the late 15th), the two manuals can be regarded partly as extensions of each other in different directions. Indeed, the Innsbruck organ puts in a new light the perennial question of the purpose of second manuals (a question rarely admitting of any obvious answer, despite common assumptions). The stopped pipes at Innsbruck are very strong in tone, with a big mouth and a tone-colour ranging from wide, vague flute sound in the bass to strong, breathy treble colour. The two Hörnli stops are very keen, repeating Terzzimbeln. Throughout the organ there is a distinct change of tone-quality from bass to treble, enabling the Hauptwerk bass keys to produce a different quality of sound from right-hand solo lines in the treble.
The organ of the Oude Kerk, Amsterdam (see Table 7) was that known to Sweelinck and shows the ‘Brabant organ’ at its most characteristic: big Principal chorus, large flute stops on an Oberwerk chest, smaller stops but yet greater variety in the Rückpositiv, and the pedals playing the Hauptwerk chorus for plenum registrations and also having a pair of high-pitched, strong-toned solo stops for (presumably) cantus firmus music. The sheer variety in the manuals would alone have encouraged variations on psalm tunes and folk melodies over the next century or so, even had there been no tradition for weekday organ recitals occasioned by the prohibition of the use of the organ in the Reformed liturgy until after the middle of the 17th century. From surviving examples of Niehoff pipework, it seems that the inner parts were of thick, hammered lead of good quality; the principals were narrow in the bass, wider in the treble; and the whole had a mild-voiced, singing quality quite different from the organ of the later Baroque period. Flutes were wide to very wide; reeds penetrating, particularly in the bass. The spring-chests were considered an advance on the slider-chests already known for smaller organs (Alkmaar small organ, extant slider-chest of 1511) or for the Chair organs of larger instruments; and in some areas (north Italy, Westphalia) spring-chests of different types remained popular for well-spaced, large-scaled organs after they had fallen out of fashion in the north. The Amsterdam organ was evidently of a very high class, and its concept and musical repertory were known in Brabant, the Netherlands, Cologne, Würzburg, Lüneburg and much further east. Some examples had big Pedal divisions, resulting during the period 1575–1600 in an organ type known from Groningen to Danzig, Frederiksborg to Prague, and passed on by a group of composers directly or indirectly under Sweelinck’s influence.
The musical position of the 1580 Barbier organ at Gisors (see Table 10) is less certain, as indeed is that of all French organs before about 1660. The French organ of 1520–75 often had a wide array of colour, whether of the Bordeaux-Italian type in the south, or the southern Flemish variety of reeds and compound stops in the north. Reeds of 16', 8' and 4' could be expected in a larger organ of about 1575; so could one or more Quint mutations; 8', 4' and possibly 16' ranks of stopped (often wooden) pipes; a few ‘obsolescent’ stops like the 1' Principal; and even a mounted Cornet, often called ‘Flemish horn’ (see Organ stop, under ‘Cornet’). In many respects the Gisors organ was Flemish: the Positiv construction (in French instruments the Chair organ had become temporarily uncommon), the spring-chests, the CD–c''' compass, the Quint flutes of 11/3', the 8' pedal stops, and the grand ravalement for the pedal reed. In sound, no doubt the instrument was nearer to the Netherlands organs of Niehoff than to the late classical French organs of F.-H. Clicquot.
From the many enormous and apparently amorphous organ specifications given by Praetorius it could be reasonably thought that many central German builders of the late 16th century did not have clear control of the organs that their technology enabled them to build. The number of stops and stop types listed by Praetorius is evidence of his attempt to give order to a somewhat embarrassing luxury of choice. The number of 4' solo Flutes alone, for instance – narrow, wide, open, stopped, chimney, spindle, narrow-stopped, narrow-conical and overblowing–narrow-stopped – contrasts strongly with the 17th- and 18th-century systematized French organ of average size, where there was probably only one plain Bourdon 8' or Flûte 4', and that with a very specific function. Some of the biggest organs, such as those in Prague and Danzig, are scarcely credible: the Týn Church in Prague appears to have had a four-manual, 70-stop organ built between 1556 and 1588, but it is possible that it was a conglomerate instrument, finished in part, but perhaps never all playable or ready at once.
More important was the potential opened up by new mechanical skill in disposing multiple chests – giving the Pedal, for example, a pair of back or side chests for the large pipes, using front chests for middle Principals and a Brustwerk chest or two for smaller-scaled solo stops. Each pedal key then connected with two or even three pallets. The first such ‘multiple action’ may have been built earlier in the century in the central Netherlands (Antwerp Cathedral, 1505; St Zwysen, Diest, 1523), but the evidence is inconclusive. By the end of the century extravagant court chapel organs were built with some of the richest mechanical layouts ever known before pneumatic action, allowing an immense array of stop combinations. If the simple organ of 1563 for the Dresden court chapel allowed 77 manual combinations with its 13 stops and Tremulant, as stated in a contemporary document, then hundreds were no doubt possible on the famous Groningen court chapel organ of 1592–6 (Table 12). Whether there was enough fish for all this sauce might have been doubted by Schlick.
Clearly the Groningen organ offered many colourful effects, particularly those of two or three stops only; indeed, the number of stops normally drawn at once by organists of that time cannot be assumed from modern practices. With the exception of three Principal choruses of four or five stops, the registrations at Dresden (referred to above) were all of three stops or less. Quite apart from what this fact might imply about the state of contemporary wind-raising techniques, it suggests that organs of the period were geared towards subtle colour and musical variety. As to the ‘multiple chests’ themselves, a very plausible attempt to describe their complex action, double pallets, transmission and extension system has been made by Bunjes (D(xv)1966). The most useful arrangement was the most traditional and long-lived, namely the multiple pedal division in which the biggest bass pipes would take one or two chests, and the cantus firmus and other high stops another chest. Wind could be prevented by a Sperrventil from entering any chest not immediately needed; and a low pressure could be the better sustained if no chest was above a certain size.
A circumspect reading of Praetorius reveals three main types of complex layout, two of them multiple action: (i) the double action enabling two or more chests to be played by one keyboard (e.g. Brustwerk and Oberwerk from Oberwerk keys only); (ii) the transmission chest (with two pallets), enabling one or more ranks of pipes to be played by two keyboards (usually the bigger stops of the Oberwerk played by pedal keys); (iii) octave and even quint transmission or ‘extension’, that is, a chest construction enabling a rank of pipes to be played at unison, quint or octave pitches. The third was very rare, but important in view of later developments. Since couplers were also much to the fore in organs using complex action, and since the Sperrventil increased the registration possibilities (by making drawn stops inoperative until required), it can be seen that an important musical aim was maximum variety for a given number of ranks. But such aids had the potentially bad effect of overemphasizing the main Oberwerk chest to the detriment of true secondary manuals, weakening the independence of the pedal, and encouraging the cultivation of intricate workmanship as an end in itself. But the Chair organ remained an independent department in the major organs, and as such helped to provide the right conditions for most idiomatic organ music of 17th-century Germany, as it also did in France, the Netherlands, Scandinavia and England.
The Chair organ was indeed the manual that supplied the true balanced chorus to the Great; but in areas or periods in which second manuals were required for simple echo effects or soft background colours (Spain and Italy during the whole period, France during the 16th century, England after 1700) or in smaller churches where expense had to be avoided, the Chair organ was dispensed with and smaller chests were incorporated in the main case.
The visual characteristics of the Werkprinzip organ (the term is a modern one, coined by the 20th-century reformers) – the single main case, the Chair organ, the separate pedal towers – were all known by the 15th century. But by the time of Praetorius, owing to the range of available organ colour and the widespread mechanical skill in making good actions, builders were able to develop a type of instrument using such features put to new, unified purpose. Scheidt’s remarks in his Tabulatura nova (1624) imply a sophisticated and codified practice for organs and their music, and show the instrument to have developed well along the lines laid down by Schlick and beyond recognition of those laid down by Arnaut. Indeed, it is a mistake to relate the Werkprinzip Chair organ and (even more so) its pedal towers to the organ of Arnaut’s period. It is often very uncertain whether in about 1450 the Chair organ of a large instrument had the same pitch as the Great or its keys aligned with it; nor was two-manual playing necessarily known outside Schlick’s area and period. Similarly, although side towers or trompes held bass pipes, they were not necessarily played by pedal keys; in any case, a vital function of Werkprinzip pedal towers is that they hold cantus firmus solo stops near the Protestant congregation in or below the gallery. No doubt the larger instruments of about 1550 might have had pedal towers combining both characteristics; but the Werkprinzip organ flourished many hundreds of kilometres north-east of the areas knowing the old trompes, and did not become fully developed until after the Reformation.
One of the attractions of the Werkprinzip was that an organ could be altered and its potential enlarged simply by adding a new department to the old. While the Totentanz organ of the Marienkirche, Lübeck (destroyed in 1942), is much less understood than modern references to it suggest, it is certain that its four departments expressed the ideals of four quite different periods: the Hauptwerk, the late 15th century; the Rückpositiv, the mid-16th century; the Brustwerk, the early 17th; and the completed Pedal organ, the early 18th. Many famous organs of this type in northern Europe (e.g. Jakobikirche, Lübeck; Johanniskirche, Lüneburg) are in fact composite instruments (quite apart from modern rebuilds), accumulations of Werke constantly altered in compass, specification, tuning and no doubt voicing by builder after builder. The smaller Jakobikirche organ, restored in the 1980s to the form given it in 1636 by Stellwagen, still contains part of its late 15th-century Principal chorus, the pipes made of nearly pure lead. The big organs of the Niehoffs, the Scherers, and the Compenius and Fritzsche families were like living organisms; except for the large chamber organ in the chapel of Frederiksborg Castle, Denmark, none remains in anything like its original state.
Organ historians are often tempted to trace the organ’s evolution in terms of the best-known builders. Frequently, however, contributions are attributed to a builder on the basis of mere conjecture or even fable. Probably not a single item in the list of innovations commonly attributed to Gottfried Fritzsche, for instance, is specifically his: inclusion of a fourth manual; more systematic use of 32' and 16' reeds to written C; introduction to north Germany of rare stops, both flue (Viol, Schwiegel, imitative flutes) and reed (Sordun, Ranket); contrast between narrow ‘male’ and wide ‘female’ stops (e.g. Nasat 22/3' and Quinte 22/3' on the same manual); reduction of the big Brabant Scharf Mixture to a high repeating two-rank Zimbel; greater use of tin in the pipe metal, and also of wooden pipes (reeds, flues, stopped, open); and systematic adherence to C compass, sometimes with split keys (d/e etc.). But they certainly belong to his period. Such a list, taken with the provincialisms running through Praetorius’s Syntagma musicum, ii (2/1619), does lead to a distinct kind of organ. The chief musical characteristics of the Werkprinzip thus emerging in a purer form in the north were: the contrast between a full, round Hauptwerk and a thin, piercing, more variable Rückpositiv; the versatile pedal; and the clarity of the whole in average parish churches with little reverberation. In most cases it was the Rückpositiv that was understood to be the ‘solo manual’, and as such it performed an important function in the chorale-based literature of the 17th century. The idiom was clearly defined for organists, who seem to have been in little need of registration hints either from composers or from builders. (Balanced contrast could easily be achieved between two manuals if the same number of stops was drawn in each.) Explicit and firm registration rules have been formulated only in areas and at periods in which organs were more uniform (e.g. in northern Italy c1600, France c1700 and England c1750).
The Hamburg Werkprinzip organ reached maturity and indeed satiation in the work of Arp Schnitger, famous in his day far and wide, the possessor of many privileges, and, with Gottfried Silbermann (whose organs were quite different in many ways), the inspiration for the German Organ Reform (Orgelbewegung) of the 1920s. Despite work in progress, surprisingly little is certain about Schnitger – how responsible he was for his individual instruments (his workshop was large and active), what his scaling policy was (scales vary hugely, depending on the church, the pitch, the value of the old pipework he re-used, etc.), what his pitch and temperament were, why he usually changed small multifold bellows to large single-fold bellows in his rebuilds, why he dropped the Rückpositiv in his late work around Berlin, who designed his cases (fig.35), etc. Research has established that his wind pressures varied between about 94 mm or higher (the large organs in Hamburg) and about 67 mm, an average being about 85 mm (Nikolaikirche, Flensburg).Table 13 gives the stop list of his first four-manual organ, in the Nikolaikirche, Hamburg (destroyed in 1842). Such very large organs give a kind of highest common factor of instruments known to such composers as Buxtehude, Lübeck and Bruhns and on which toccatas and chorales of the older composers (Scheidemann, Weckmann, Tunder and others) were still played. In some areas of the Netherlands, north Germany and Scandinavia, such an organ remained the model until 1850 or so, and the Werkprinzip can be recognized behind later organs very different in sound and appearance from the Hamburg Nikolaikirche.
In northern Italy the ‘classical Brescian organ’ of the late 16th century remained a norm to which the occasional 17th-century two-manual organ was an exception (and probably built by a foreign builder); it was only in the mid-17th century that the French organ achieved its classical form, intimately bound up with music of a distinct and well-characterized idiom. The very number of livres d’orgue published following the publication of the Caeremoniale parisiense (1662; see Organ mass) suggests a remarkably unified ‘organ school’. Every stop in a French organ of about 1700 came to have an appointed purpose, and the livres d'orgue from Nivers (1665) to Marchand (c1715) and beyond, several of which contain registration tables, give the impression that late 17th-century Paris had shaken off outside influences past and present.
But Flemish influence had originally been paramount in northern France as Italian and Spanish had been in parts of southern France. Titelouze’s plenum was much the same as that of a Dutch composer. Even the Cornet was Netherlandish, from the time of the organ in Antwerp (1565) onwards. Yet while many details in Mersenne’s Harmonie universelle (1636–7) may point to northern influences like Praetorius, important moves towards the organ of the livres d’orgue were made at this period, above all in Paris. Narrow- and wide-scaled Tierces soon became common (narrow at St Nicolas-des-Champs, 1618; wide at St Jacques-de-la-Boucherie, 1631) and with them a general change towards mutation colour (e.g. more 13/5' ranks, fewer 1'). Mersenne knew Tierces as ranks used both in the plein jeu and for solo combinations. More important still were the new short-compass keyboards of solo or quasi-solo character: the 25-note Cornet manual (i.e. a Récit) at St Séverin, Paris (1610), set a new fashion, though intended at first only as a little keyboard giving the raised Cornet chest a second row of keys. Were the little extra chest to be placed below the Grand orgue it would be called Echo and probably have a shorter keyboard and more ranks. By 1660 a large organ could be expected to have four manuals (including two treble halves): two supplying classical Great–Chair organ contrast (Grand orgue and Positiv) and two right-hand solo manuals (Echo and Récit) for music influenced by the monodic récit dramatique of the ballet de cour.
The organ played by Nicolas Lebègue (Table 14), one of the organists to Louis XIV, shows the French scheme of the period at its best. Rarely can an organ have been so closely related to the music of its period as such an instrument to the works of Lebègue, Raison, Grigny, Couperin and others. Standardization was one of the chief aims. To obtain the Plein jeu for those movements in the Mass that required it, for example, the organist drew the Principals 16', 8', 4', 2', then added the Fourniture, whose composition was probably something like: and then finally the Cymbale: which, if it was a large four-rank Cymbale, included the 26th as well. Such schemes were recorded by Bédos de Celles (B1766–78) at the end of the great period but can be taken as typical; thus, for instance, his specification of 1766 (for the case design, see fig.36) is almost indistinguishable from that of the 1674 organ at Le Petit Andely. Important points about the French chorus (which also, through his brother Johann Andreas in Alsace, influenced Gottfried Silbermann in Saxony) are that the Cymbale broke back more often than the Fourniture but generally duplicated the Fourniture in the treble; no rank is higher than 2' at c''' (i.e. 28 mm long); and doubled ranks did not occur in either Mixture. The plein jeu was rarely brilliant, never shrill; it was rather a further ‘colour’ of the organ.
Pitch, at least from about 1680, was about a semitone below a' = 440. Pipe metal was hammered, including the lead pipes for flute stops. The keyboards were always pivoted at the end, and the mechanism suspended from the chests above, trackers passing straight from the Grand orgue keyboard to the pallet box ranged vertically above the keys (fig.37). The Positif stickers connect with a lever which raises the pallet placed above the channel-end. Such systems were simple and logical, providing the player with a very sensitive action facilitating, among other things, the playing of ornaments.
To obtain the Grand jeu, the organist drew a varying combination of reeds, Cornet, Principals 8' and 4' and Tierces, but no mixtures. The reeds supplied volume and brilliance; the Cornet boosted the thin reed trebles; the Tierces encouraged the overtone level that gave prominence; and the Principal 4' strengthened the basic tone. Fugues were often played on such registrations, and other fugal colours, such as Tierce combinations with Tremulant, give an impression quite different from that of Italian or German fugues of the period 1650–1750. On larger organs, a pair of Trompettes on the Grand orgue after about 1750 gave a timbre peculiar to the bass depth and brilliance of French reeds. Late in the period a Trompette was also put on the Positif, and following the organ at Notre Dame, Paris (Thierry, 1730–33), Bombarde manuals were also very occasionally included – keyboards coupled to the Grand orgue and playing the large-scaled Bombarde 16', perhaps with other large reeds; at Notre Dame the Bombarde division could also be played from the Pedal. The chief purpose of this was to give the ranks their own chest and wind supply, which was often experimentally high by the end of the classical period. Similarly, it was the treble ‘boosting’ supplied by the Cornet that led eventually to higher pressures and double-length harmonic resonators during the next century. The reed basses, however, remained the chief glory, encouraging composers to write special basse de trompette music from about 1650 onwards. De grosse taille (‘of large scale’) is a phrase often applied in 17th-century contracts to the Trompette.
Even in plein jeu registrations (in which the mixtures replaced the reeds for brilliance), the French organ was not overdrawn. Only a handful of stops was involved in any of the characteristic French registrations, and all the codified ingenuity was geared towards clearly marked colours. Thus the texture of a piece marked Tierce en taille, one of the most beautiful effects known to organists, would consist of the following elements: (i) left hand on Positif, Bourdon 8' + Prestant 4' + Doublette 2' + Nasard + Tierce (perhaps + Larigot), playing a free, singing melody in the middle of the texture, gamba-like; (ii) right hand on Grand orgue, Bourdons 16' + 8' + 4' (jeux doux), playing accompaniment above or around the melody; and (iii) pedal playing the bass line on a Flûte 8' (or perhaps coupled to Grand orgue Bourdon 16' in later examples). There was some variety in such registrations: Bédos de Celles, for instance, did not like 16' manual stops in accompaniments. On the other hand, the Tierces were so characteristic of French organs that many combinations were possible: a right-hand Cornet line on the Grand orgue, for instance, could be accompanied in dialogue by a left hand Jeu de tierce registration on the Positif. From D’Anglebert (1689) onwards, Quatuors and Trios had been played using three different colours including pedal: indeed, the chief purpose of the pedal was ‘pour pouvoir jouer les trios’ (according to Joyeuse’s contract at Auch in 1688) and to play 8' and 16' cantus firmus in pieces built on a plainchant. The biggest drain on wind supply and narrow channels must have been the slower, sustained music written for concert de flûtes and fonds d’orgue registrations, comprising all available Montres, Prestants, open Flûtes and Bourdons. Such sounds became fashionable around the middle of the 18th century; but whatever the combination, no organist in the provinces need have been in doubt about how the Parisian composers expected their pieces to sound (see also Registration, §I, 5).
The splendid French organ at the eve of the Revolution (1789) may well have been far superior to the music written for it, as were the Dutch organ of 1700 and the English organ of 1850; but it is the very decadence of the music that best draws out the extravagant contrasts, brilliant reeds, round flutes, echoes, big choruses and immense colour potential available on such extant late instruments as those at St Maximin-en-Var (J.-E. Isnard, 1773) and Poitiers Cathedral (F.-H. Clicquot, 1787–90). The French organ received a serious setback when the Revolution disrupted life in the cities. It was ripe for development at the very moment when Clicquot’s sons became soldiers; but not until Cavaillé-Coll's organ for St Denis, completed in 1841, did Poitiers have a worthy successor.
Evidence for the late medieval organ in the British Isles is extremely sketchy, partly because of the protracted period of religious and political instability that lasted from the Dissolution of the Monasteries in 1536 until the Glorious Revolution of 1688, which wiped out a huge mass of material, and partly because the small instruments that were characteristic of this period warranted little in the way of extravagant description or fame. There is some evidence of connections with the European mainland. Despite Henry VIII’s leanings towards Italian culture, those connections (at least in organ building) seem to exist in greatest number and importance with Flanders. Most significant were the appearances in England of Flemish organ builders such as Michiel Langhedul at Salisbury Cathedral in 1530 and Jasper Blancart in London (1566–82), both from families of craftsmen well known on the Continent.
The nature of the organs associated with the great age of Tudor church music remained completely obscure until the late 20th century, when a number of significant finds were made. There may have been isolated large organs in Britain, such as the one built by Laurence Playssher for Exeter Cathedral in 1513 (for which bills survive), but all the remaining evidence suggests that the standard instrument used to accompany the choral liturgy was small. This evidence consists of large numbers of inventory records made after the Dissolution, a couple of early contracts, and, since 1995, two fragmentary remains of early 16th-century instruments preserved by chance. The most important of these, the ‘Wetheringsett fragment’ (an entire organ soundboard of about 1520 preserved as a door in a farm building in Suffolk fig.38), indicates the type of instrument typical of the school (Table 15), its size and scope directly confirmed by contemporary contracts at All Hallows, Barking-by-the-Tower, London (Antony Duddyngton, 1519–20), and Holy Trinity, Coventry (John Howe and John Clynmowe, 1526). In large buildings instruments of this type seem usually to have been multiplied in number, but not in size. At Durham Cathedral before the Dissolution, according to one account, there were five organs in various parts of the building, of which at least one had pipes of wood, each with its specific role in the liturgy and in the cycle of the church year. The largest instruments of this period may have been based on a full-compass Diapason of 10' pitch, though the Principal 5' was still regarded as the unison. The use of a long chromatic keyboard is characteristic of English instruments; the provision of the low accidentals, at a time when mean-tone tuning was probably universal, may be explained by the English love of ornamentation in keyboard music.
From around 1570 there is widespread evidence from all parts of the British Isles that, as a result of Puritan opposition, organs were removed and destroyed. With the revival of a High Church party in the early 17th century, led by William Laud, organs were returned to the cathedrals and collegiate churches, but not, it seems, to the parishes. The great majority of these new instruments, like the Worcester Cathedral organ of 1613 (Table 16), were built by members of the Dallam family. Many were ‘double organs’, i.e. of two manuals, for which the genre of organ music that became known as ‘double Voluntary’ was developed.
The Civil War of 1642 onwards brought an end to this activity, and organs across the land were again dismantled. The Catholic Dallam family sought refuge in Brittany, where they continued to ply their trade, adapting completely to the local style. After the Restoration in 1660, organs were restored or newly built at first on exactly the same pattern as before the war. However, new foreign influences soon promoted the arrival of a new style, and a further wave of rebuilding and new commissions. The post-Restoration English organ was partly the result of rivalry between two organ-building factions. In the aftermath of the Fire of London in 1666 the city was opened to all craftsmen in order to speed the rebuilding. One who came was Bernard Smith (c1630–1708), an organ builder then resident in the Netherlands (although probably German in origin), later to become known in affectionate recognition as ‘Father’ Smith. He established himself and gained a royal connection in the early 1670s, much to the chagrin of his rivals, the remaining members of the Dallam family and their in-laws the Harrises. Smith and Renatus Harris (c1652–1724) made a public exhibition of their rivalry in 1683–8, both building new organs for the Temple Church in London, a contest that became known as the ‘Battle of the Organs’. Smith's instrument (Table 17) was judged the better; Harris’s organ was removed.
Smith went on to build the organ for Wren’s new St Paul’s Cathedral, completed in 1697. This also had three manuals, the Great organ descending to low C', 16' pitch. Pull-down pedals to the Great organ were added in 1720. The split keys, used by Smith at the Temple and at Durham Cathedral (1686), allowed for some remoter keys to be used without any compromise to the mean-tone tuning.
Despite Smith’s success, Harris was ultimately just as busy. His own instruments (e.g. that for St Bride’s, Fleet Street; Table 18) showed some influence from the Dallam-Harris clan’s period of exile in France, and, given the continental background of these rival builders, the question might be asked as to why they did not introduce the conventional European C-compass or even independent Pedal organs. In fact Smith was working in the Netherlands at a time when the independent Pedal was only just becoming a feature of the largest new organs, and the depth of Harris’s debt to France was surely tempered by the fact that he was only eight years old when the family returned to England in 1660.
In the end it was the Harris style that succeeded into the 18th century, through the work of Renatus’s son John Harris and associated craftsmen such as Richard Bridge and John Byfield (i) and (ii). The standard three-manual instrument of the period, with its long-compass Great organ and (now) Choir organ (disposed as a Chair in some cathedral and collegiate instruments, but otherwise normally placed behind the Great), was enlivened by the conversion of the old short-compass Echo (where the pipes were entombed in a box of some kind) into an expressive Swell organ by fitting a movable front (operated by a pedal at the console) on to the box enclosing the pipes. The first example of this was introduced by the two Abraham Jordans, father and son, in their instrument at St Magnus the Martyr, London Bridge, in 1712 (and may have been derived by them from earlier Iberian examples). Even the most fully developed large instruments followed this established pattern, simply supplying stops of familiar name and type in more extravagant numbers. In the instruments of Bridge (Table 19 and fig.39) and the Byfields a superficial resemblance to the French type remains, right down to the occasional use of wide principal scales for the mutation stops. However, it is clear that English national taste exercised itself vigorously in excluding any blatant sounds or gross pitches, the emphasis being rather on sweetness, delicacy, and the accuracy of the imitative registers (Trumpet, Hautboy, French Horn, Bassoon, Vox humana and Flute). The extempore players of the 18th century, performing voluntaries perhaps slightly more complex than those which survive in printed form for the large semi-amateur market, would have exploited these imitative effects to the full. The Swell divisions, originally fitted with sliding sash fronts, but by 1800 with ‘Venetian’ shutters after the pattern of the familiar window blind, enhanced the expressivity of these effects.
Registration followed conventional patterns. Solo stops (the reeds, Cornet and Flute) might be heard on their own. Otherwise the combinations referred to most frequently are ‘Diapasons’ (Open Diapason plus Stopped Diapason, used for slow introductory movements) and ‘Full Organ’ (all Great organ stops except the Cornet). The latter combination would be given an agreeable nasal twang by the Trumpets and Clarions, and by the provision of third-sounding Tierce ranks in the mixtures in addition to the usual unisons and Quints. During the 18th century organs such as this became universal in cathedrals, collegiate churches, and the parish churches of wealthier towns. In the cathedrals and colleges they accompanied the choir; in the parish churches they accompanied the congregation in singing metrical versions of the psalms and were used for extempore voluntaries before, during and after the service.
The market for new organs in the 18th century was vigorous and competitive, encouraging indigenous and immigrant craftsmen, including the Swiss-born John Snetzler (1710–85), who settled in London around 1740 and adapted completely to the local style. Considerable demand was also developing for small instruments for secular use. There had been a tradition of chamber organs in England since early times (see Chamber organ and Positive), and several examples of small organs, often with pipes entirely of wood, survive from the second half of the 17th century. There was a considerable revival of interest in the second half of the 18th century contemporary with (and perhaps because of) the great popularity of Handel, who seems regularly to have used small or even portable organs when playing continuo and for the performance of organ concertos as interludes to larger works.
Later 18th-century builders, notably members of the England family and Samuel Green, continued to refine the basic recipe, adding only the Dulciana (a delicate string-toned stop first used in Britain by Snetzler) to the range of available voices, and never exceeding the size of instrument established by their immediate forebears. The only expansion in range came in the occasional provision of pull-down pedals to the Great organ, in larger and later examples operating a single rank of unison Pedal pipes also.
The national taste for subtlety and delicacy meant that English organs gradually became softer and prettier in sound as the century progressed. The importance of the art of voicing had been demonstrated by the rivalry of Smith and Harris. The Englands and Samuel Green became obsessed with tonal beauty. When Green built a new organ for Salisbury Cathedral in 1792 (Table 20), the building was closed to visitors for two weeks so that he could attend to the tuning and voicing in near silence. Green also provided an organ for the Handel Commemoration festival of 1784, an enormous event held at the west end of Westminster Abbey. Hoping to address such new demands, Green’s successors attempted to build much larger organs in the years immediately following 1800, but still adhered to the insular recipe of the English classical organ type, until at last abandoning it in the 1840s in favour of the ‘German system’ of uniform C-compass keyboards and independent pedal organ.
The organ of the Iberian peninsula has many special characteristics. Yet Baroque organs of Spain and Portugal differ in detail from area to area, and while the visual parts of such instruments were indigenous and individual, their musical characteristics are founded in common European traditions. In 1500 Spanish organs stood at much the same point as those of northern France, the Netherlands and northern Germany, having separable stops of varying colours and pitches, though being more likely to have but a single keyboard. The influences were Flemish rather than Italian – a Pedro Flamench (‘Peter the Fleming’) was at work in Barcelona in 1540 – and even the term ‘Fleutes’ for Principals (a later term was Flautado) was Flemish. Principals and Mixtures (Mixtura, Forniment, Simbalet) were the stop-changes or mutaciones available on the new big organs of 1550, as they had been earlier in the north, although positives were already showing an array of slider-stops, including regals, reeds and wooden flues. Evidently Flemish builders brought Chimney Flutes and Quintadenas with them, and by the 1550s new large organs of splendid proportions could be expected to have large-scaled reed stops. Often these reeds had colourful names: Trompetas naturals a la tudesca (‘German or Dutch trumpet stops with natural-length resonators’), Clarins de mar (‘trumpets of the sea’, as used for naval signals) or Clarins de galera, molt sonoroses (‘gallery trumpets, very sonorous’) at Lérida in 1554. Although none of these was horizontal, the terms are evocative and probably played their part in the later evolution of the remarkable Iberian reed stops.
Just as Flemish singers were called to Felipe II’s court chapel in Madrid, so Flemish organ builders were commissioned (notably members of the Brebos family), putting into practice their up-to-date ideas at El Escorial. The Brebos organ had a large Hoofdwerk of two chests and big flue and reed choruses, as well as flute mutations; the pedal was similarly a large modern department. But the only other manual was a Brustwerk (though one of 12 stops), and indeed Chair organs were never to become important in Spanish organ building, although the Cadireta (both interior and exterior) was later to become a common secondary division. Barcelona seems to have been a centre for northern European builders, but registrations left at the monastery of Sant Joan de les Abadesses in 1613 show the stops to have been used in a traditional or old-fashioned way, and during the 17th century emphasis shifted south and west.
Regals may have been the first reed stops to be placed horizontally in Iberian organs (in the manner later known by the French term En chamade), but in 1659 the builder Echevarría placed a full-length Trumpet (Clarin) horizontally in the façade of his organ in Alcalá de Henares, boasting that he was the first to do this. Placing reeds horizontally in the case front was convenient for sound (penetrating in big churches where the organ did not face the congregation), accessibility (for quick tuning), reliability (gathering little dust), economy (replacing cathedral trumpeters) and appearance (fig.40). But the documents rarely specify whether reeds were horizontal or not, just as documents before the end of the 18th century rarely specify whether or not ‘Eco’ chests or interior Trumpets and Cornets were placed in a box. Reeds were plentiful: in addition to the Clarins (‘mounted like cannons’ in the cornice), Echevarría’s organ contained Trompetas reales (‘of which there can be three kinds’), Dulzainas, Orlos (resembling ‘the guitar and harpsichord’ (zitara y clavicordio)), Trompeta mayor (‘a stop found in few other organs’), Bajoncillos (‘also newly invented’), Voz humanas and Angeles o Serafines (angel statues blowing trumpets). By 1750 a large organ would have a huge battery of reeds, vertical and horizontal, many kinds of chorus, large Swell departments and even a pedal rank or two. The well-known organ of Granada (fig.41) can be taken as an example; its stop-list is given inTable 21. No large Spanish organ can be called fully ‘typical’. As in Italy during the next century, the larger the organ, the greater the variety of solo stops; the large organ of Toledo (1796), however, shows no advance on the concept of smaller organs built nearly a century earlier.
A few registration guides for Spanish Baroque organs have been found. One, for an instrument made at Segovia Cathedral about 1770, suggests the few staple requirements organists made of these extravagant creations. They comprise French-style ‘dialogues’ (two-part pieces with mutation stops or reeds in each hand), regal solos (e.g. Dulzaina in either hand), half-stops for each hand on the same manual, echo effects and manual contrasts for two- or three-part music, flutes contrasted with reeds (perhaps for use in homophonic music), inner vertical reeds with outer horizontal trumpets, cornets and reeds 8', 4' or 8', 2' combined. Because organs of this period contained many halved stops (medio registro), the right hand could produce a line lower than that of the left hand, or one very much higher, and this feature characterizes much of the music of the time. The Echo box is also mentioned, not for swelling but to mute the effect of certain registrations. Pedals are ignored.
Over the whole period, the bellows of the Iberian organ were usually multifold and operated by hand. Wind pressure was low (c50–60 mm), though up to 90 mm on larger instruments. The chests were always slider-chests, usually divided into bass and treble, either between B and C (usual in the south) or C and C (usual in the north). As in French organs, the pallets are directly above the keys (suspended action). The chest layout is often very complicated, each group of stops set on channelled-off subsidiary chests, terraced at different heights, easy to tune and reach, and often some way removed from the pallet. Neither bellows nor trunks and channels allow the families of stops to be combined, but the rigidity of registration enabled builders to include helpful accessories like knee-operated ‘shifting movements’ to aid stop-changes. Secondary divisions are often placed on the floor of the main case (Cadireta interior) and operated by a sticker action; if there is a Chair organ (Cadireta exterior), the pallets are below and directly in line with the lower keyboard, and the channels pass below the closely placed organist’s seat. A middle manual may operate pallets of a pair of chests placed in the rear case-front of the organ, facing the side aisle. There are no manual couplers. Pedal keys are short, sometimes mushroom-shaped, usually encompassing eight or ten notes, as in Italian organs; there may be a rank of wooden pipes but most pedals are pulldowns, presumably for organ points and cadences. The hinged lid of the Echo box – known to contain a Cornet by about 1675 but including reeds by about 1710 – was raised by a pulley and rope operated by a pedal-lever that needed to be kept down if the lid was to remain open.
The scaling of the Principal is often narrow, the tone restrained; flutes are gentle, and Cornets expansive but thinner than the French. The quiet flutes contrast greatly with the reeds, which were designed to fill the spaces of a large Spanish church outside the immediate intimacy of the quire or coro over which the organ looms. Reeds and regals, and divided stops in general, encouraged solo music, and Correa de Arauxo’s Libro de tientos y discursos (1626) shows a matured technique of left- or right-hand solos, a technique similar in effect to other 17th-century dialogue music such as the English double voluntary and certain French pieces (Basse de trompette). The reeds also played chords, not only for the celebrated batallas (battle-pieces) but also for imposing intradas on feast days.
At Zaragoza (extant case dated 1443; fig.42) organs were already placed between the pillars of the quire of the church. It was probably this position that encouraged large flat façades bearing little resemblance to the inner construction of the organ itself, indeed often giving it the appearance of having more chest levels than it has. The amount of empty space within a Spanish organ absorbs strong partials in the plenum and helps to produce the mild quality of the flue choruses.
No account of the Iberian type of organ would be complete without some mention of its manifestations in the New World. Imported organs, at first small, are recorded in Mexico not long after the Conquest, before the midpoint of the 16th century; by the end of the 17th century there are numerous records of organs being both built and played by native Mexicans who had been taught by Spanish priests. In 1624 it was recorded that ‘no Augustinian church lacked an organ’, and that promising youths from each village were being sent to Mexico City at community expense to study music and organ playing. From this period to the late 19th century virtually all organs in Mexico were locally built. One notable exception is the large Epistle organ in Mexico City Cathedral, built in 1693 by Jorge de Sesma of Spain and first used in 1695. Its main manual has over 30 divided stops, with smaller Cadereta and Positivo divisions playable from the secondary manual. In 1734 José Nassarre, a Mexican who had already constructed a sizable organ in Guadalajara Cathedral, enlarged the Cadereta, and the following year he completed an organ of similar size on the Gospel side of the quire, which had an additional 27-note Recitativo enclosed in an expression box. Both organs have survived neglect and fire, and were restored in 1978 by the Flentrop firm. Many Mexican builders of the 17th century are anonymous, but in 1738 the first of several generations of Castros established a workshop in Puebla, and significant work of this family survives in the area. In 1786 Manuel Dávila was advertising that he built organs tuned in equal temperament, and in the early 19th century José Antonio Sanchez and Manuel Suárez were active in the Taxco area. Even at the end of the 19th century, Mexican-built organs were conservative in nature, generally following the 18th-century Iberian pattern of a single-manual instrument with treble and bass stops, housed in ornate casework often of considerable artistic distinction. The late 19th and early 20th centuries saw the decline of the Mexican organ-building school and increased importation of German, Italian and, to a lesser extent, American and French instruments. Many native Mexican organs were allowed to go to ruin, but since the restoration of the Mexico City Cathedral organs funds have been made available through the Patrimonio and private foundations to make possible the restoration of a number of significant instruments. Although Mexican organs became well documented and studied in the final decades of the 20th century, little is still known about those elsewhere in Latin America other than that significant numbers of older organs have been reported, especially in Peru.
The essentials of the Brescian classical organ were established by 1575 at the latest: large, shallow cases (somewhat altar-like in shape, open-spaced above the pipes), with one chest at the level of the case pipes (spring-chest, mortised with well-spaced channels often of equal size), and multifold bellows and low wind pressure. The compass would rise to a'' or c''', with all but case pipes of metal with a high lead content (thick-walled, principals relatively narrow in the bass, flutes wider with smaller mouths) and completely separate ranks (the upper of which break back an octave at regular intervals). The tuning would be some form of mean-tone temperament, but the general pitch level would vary from organ to organ (‘come si vuole’, as Antegnati remarked), as indeed it did throughout Europe. Sometimes there was an octave or so of pedal pulldowns (short keys sloping up slightly; ‘pedali a leggio’), and occasionally after about 1600 with thin-walled wooden Pedal Principals. Registration was standardized, and each combination suggested to the player a certain modal style to be played at a certain moment of the Mass (e.g. ‘Voce umana’ for the Elevation), as set forth by Banchieri (L’organo suonarino, 1605) and others.
Italian builders and organists remained faithful to these ideas, modifying them gradually but leaving them recognizable even in the large organs of the 1850s. Yet it could be that historians have overemphasized the Brescian organ, for each city or region had its own version of the general plan. The Flemish builder Vincenzo Quemar had already introduced stopped pipes (Flute 22/3'), Chimney Flute (2'), conical flute (12/3'), reeds (Tromboni 8') and regals (Voce umana 4') at Orvieto Cathedral by 1600, as well as a Tremulant and an aviary of toy stops. Less than a century later, another German (the Silesian Eugen Casparini) was introducing Mixtures and even Cornets in organs of the Tyrol, as well as confirming the trend towards the German-French C–c''' compass, and the Fleming Willem Hermans had a strong influence in Tuscany. But indirect Italian influences appear to have been strong elsewhere early in the 17th century, notably in Provence and Jesuit Poland (conventual churches). Second manuals remained the exception, and the one made by the Dalmatian builder Pietro Nacchini for S Antonio, Padua, in 1743–9 presented a character little different from that of S Maria in Aracoeli, Rome, in 1587: I Ripieno, Voce umana, two flutes, Tierce, regal; II Ripieno, Voce umana, one flute, Tierce, regal; Pedal 16'. As builders began collecting the upper Ripieno ranks on to one slider, a Mixture resulted that was not so different from a French Fourniture cymbalisée. A particular taste grew during the 18th century for Tierce or (as they were called) Cornetto ranks, but these had already been included in some two-manual registrations written down in Rome in 1666. Moreover, during the 18th century large, experimental organs were built on special commission, spreading new ideas from Bergamo to Sicily. Toy stops remained an important element in Italian organs. Although rivalry with the fine organs ‘at Marseilles, Trent and Hamburg’ may have been the motive behind the five-manual organ at S Stefano dei Cavalieri, Pisa (Azzolino Bernardino Della Ciaia, 1733–7), and elsewhere, the result was peculiarly unlike any of them. The 1730s may have seen a parting of the ways when builders throughout Europe were developing techniques beyond musical requirements; but the five-manual, three-console, 55-stop organ at Catania, Sicily (Duomo del Piano, 1755), though admired and even copied in the next century, was little more than an accumulation of several classical Italian organs, collected together, and it was decidedly atypical. The effect of Spanish rule on the Kingdom of Naples has yet to be explored from the point of view of organ building, but it seems doubtful whether Spanish influences ever went further east than the Balearics.
A characteristic and influential organ type of the later 18th century was the Venetian, brought to fruition by Nacchini and his pupil and successor Gaetano Callido. The Callido firm built hundreds of single-manual organs and many with two manuals (the pipes of the second being enclosed in an expression box from about 1785), all of excellent workmanship and summing up many of the 17th- and 18th-century trends, discarding the more extravagant elements, giving their organs a velvety, vocal tone far removed from Antegnati; indeed, in their wide-scaled Principals they influenced many a so-called Italienisch Prinzipal in modern German organs. The stop-list of an instrument by Callido is given inTable 22; for ease of tuning, the regal (Tromboncini) stops were placed in front, standing vertically before the Principale (as they did in other Italian organs of the period). Registrations provided by Callido elsewhere show orchestral imitations to have been important to organists of the period; there is no subtle play of two manuals, and in general swell shutters seem to have been used either quite open or quite closed, rather than expressively.
Research by Umberto Pineschi during the last two decades of the 20th century into the important Tuscan school and the influence of Willem Hermans thereon, together with the work of the state-sponsored restoration workshops at the Palazzo Pitti in Florence, has added to the knowledge of the Italian organ and to the preservation of its heritage.
In many ways the organs of Bach’s main area of activity, Thuringia, Weimar and Leipzig, showed the same kind of influences as his music: a basic German traditionalism tempered with French colour and Italian fluency. Neither the organ nor the music was as local in origin or as independent of other regional ideas as was usually the case elsewhere, even in the mid-18th century. Bach himself is known to have been well acquainted with organ music of many countries and periods, as were such contemporaries as J.G. Walther; later colleagues, however, seem in some respects to have had less wide knowledge. C.P.E. Bach’s remark that his father registered stops ‘in his own manner’, ‘astounding’ other organists, might conceivably refer to either a French or a 17th-century north German approach to stop-combination, one not known to players of the younger generation, who thought that ‘the art died with him’; however, one must be careful not to read too much into this remark. On the other hand, J.S. Bach is said to have complained that Gottfried Silbermann’s mixtures were ‘over-weak’, with ‘not enough sharp penetration’, which might suggest that he did not appreciate that Silbermann’s French plein jeu was different in function from a north German organo pleno, being one of the many colours rather than a total chorus. Moreover, the period in which Bach worked was one of a changing aesthetic for organs, when the large west-end organ became increasingly associated with congregational hymn singing, requiring big chests, large bellows capacity, many 8' stops (including those of string tone), a powerful 16' pedal tone for ‘gravity’ and a range of sound characterized more by extremes of loud and soft than by a full array of equal, piquant colours.
Apart from the qualities of his music, then, the position of Bach in organ history is important, and can serve to show some of the currents affecting the flow of German organ music. In the course of two centuries, the area between Hanover and Breslau produced great builders (the Fritzsche and Compenius families, Casparini, Silbermann, Joachim Wagner, Engler, Hildebrandt, Trost and Schulze) and some even more influential theorists (Praetorius, Werckmeister, Adlung, Agricola, Marpurg, Sorge, Knecht, Seidel and Töpfer). Its composers included many who travelled to hear and see great organ traditions elsewhere (for example Bach, who went to Lübeck to hear Buxtehude and to Hamburg to prove his ability on a Schnitger organ) or who settled down in another part of Germany and formed schools of keyboard playing around them (Froberger, Pachelbel, C.P.E. Bach). Many details of the stop-lists of J.S. Bach’s organs at Arnstadt (1703–7), Mühlhausen (1707–8) and Weimar (1708–17) remain unclear, as do larger matters of registration and tonal effect; but fine restorations during the 20th century of organs by Trost and other builders contemporary with Bach, along with the increased accessibility of Thuringia and Saxony since 1989, has helped considerably in the understanding of these matters and in the dispelling of many Orgelbewegung misconceptions. The Arnstadt organ (Table 23) can be taken as typical, one known by the Pachelbel school as well as Bach’s family. The particular kind of second manual on this instrument, the pedal department, and the range of 8' manual colours had long been traditional in this part of Germany, and in style the Weimar court chapel organ followed much the same patterns.
TABLE 23 |
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Bonifaciuskirche, Arnstadt |
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J.F.Wender, 1703 |
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Hauptwerk (Oberwerk) |
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Brustwerk |
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Quintadena* |
?16 |
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Stillgedackt |
8 |
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Prinzipal |
8 |
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Hohlflöte** (g-d''') |
8 |
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Viola da gamba |
8 |
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Prinzipal |
4 |
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Gemshorn* |
8 |
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Nachthorn |
4 |
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Grobgedackt |
8 |
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Quinte |
2 |
2/3 |
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Quinte* (open) |
5 |
1/3 |
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Spitzflöte |
2 |
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Oktave |
4 |
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Sesquialtera |
?II |
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Oktave |
2 |
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Mixtur |
IV |
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Mixtur |
IV |
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Zimbel |
III |
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Pedal |
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Trompete |
8 |
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Sub-Bass |
16 |
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Violon Bass |
16 |
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Prinzipal Bass |
8 |
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Posaune |
16 |
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Compass: CDE-d'-d''' |
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Couplers: Hauptwerk to Pedal; (? Brustwerk to Pedal, Brustwerk |
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to Hauptwerk); (? Hauptwerk to Pedal coupler stop later addition) |
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Two tuned Zimbelsterne (Glockenaccord, ?1703) |
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Tremulant (Hauptwerk) |
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* pitch length uncertain |
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** compass and manual uncertain |
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Larger church organs began to allow for new attitudes towards the plenum. When Bach was a student in Lüneburg in 1700 or visited Lübeck in 1706 organists there would not have ‘mixed the families’ of organ stops by drawing more than one rank of any given pitch even on the larger organs. As Werckmeister had written in 1698, organists should not draw two stops of the same pitch, because wind-supply and tuning problems would prevent them from being fully in tune together; but by 1721, shortly after Bach’s visit to Hamburg, Mattheson was suggesting an organo pleno of all stops except reeds – Principals, Bourdons, Salicionals, Flutes, Quintatöne, Octaves, Fifths, Mixtures, Tierce, Sesquialteras etc. The significance of any remark made by Mattheson, or its precise meaning, is often a matter of conjecture, but after the midpoint of the century Adlung and Agricola both seem to have supported the idea of mixed stops. Adlung thought that good modern bellows ought to allow an organist to draw Manual Prinzipal 8' + Gedackt 8' + Gemshorn 8' + Rohrflöte 8' with Pedal Contrabass 32' + Posaune 32' + Sub-Bass 16' + Violon 16' + Posaune 16' + Oktave 8' + Gedackt 8'; and composers such as Gronau drew Prinzipal 8' + Flute 8' + Oktave 4' + Flute 4' + Salicet 4' + Trompete 8' + Oboe 8' to bring out the melody of an organ chorale. Thus, during Bach’s lifetime, ideas about what constituted Full organ were in the process of changing, as were ideas about the number, kind and use of solo stops and combinations, as illustrated in Kauffmann’s Harmonische Seelenlust of 1733–6.
In Lüneburg, Lübeck and Hamburg Bach would have heard organs with Rückpositive, but after about 1710 such divisions were rare in new instruments of his own area and further south; some cities had not known them since about 1650. The Rückpositiv at Mühlhausen already had a stop-list (8.8.4.4.2.2.11/3.?II.III) quite different from the bright, colourful manual of Dutch and French organs, and, where gallery space was sufficient, builders preferred to hold such second-manual chests within the Great case, usually above the Great. The resulting Oberwerk was thus different in origin from that of Niehoff and Schnitger. At the same time pedals became progressively less able to provide solo colour for cantus firmus music, itself a dying genre; and organs took on a stereotyped character that varied only if the builder was sensitive to different voicing and scalings demanded by different church acoustics.
The privileged organ builder to the court of Saxony was Gottfried Silbermann, a native of Saxony who was apprenticed to his elder brother Andreas in Alsace and returned to make the friendship of such composers as Kuhnau and Bach. Silbermann’s early organ in Freiberg Cathedral, Lower Saxony (1710–14; now restored), already demonstrated many of these developments Table 24). Here was not a mass of clumsy auxiliary stops but a unique blend of Saxon and Alsatian-French elements, full of well-thought-out balance between the three manuals, and implying a mode of registration needing to be learnt carefully by the organist. Silbermann’s voicing is strong, particularly of the Principals; his smaller village organs have great power and energy. Wind pressure (as in Joachim Wagner’s organs) was c94 mm (manuals) and c104 mm (pedals) in later organs, about 10 mm higher than that of good large organs of about 1700.
There is little direct connection between any of Bach’s organ music and such instruments as that at Freiberg; but were the Trio Sonatas, for instance, known to the organist of such a church, he may well have drawn for lively movements the combination of stops noted by the local priest as having been recommended for Silbermann’s Fraureuth organ (1739–42) for jeu de tierce en dialogue (called Tertien-Zug zweystimmig): right hand Prinzipal 8' + Rohrflöte 8' + Oktave 4' + Quinte 22/3' + Prinzipal 2' + Tierce 13/5'; left hand Gedackt 8' + Rohrflöte 4' + Nasard 22/3' + Oktave 2' + Quinte 11/3' + Sifflöte 1'; and Pedal Sub-Bass 16' + Posaune 16'. Given a free choice, as he may have been in the design for Hildebrandt’s large organ at St Wenzel, Naumburg (1743–6; restored in the 1990s), Bach might well have chosen to combine the features of several organ types: three manuals including Rückpositiv, 53 stops including Cornet and solo pedal stops, and each manual designed as an entity with its own auxiliary stops (Viola, Fugara, Gamba, Unda maris, Weitpfeife, Spillflöte etc.). As in all organs frequently played by Bach, Naumburg had several string-toned stops, either narrow cylindrical or conical, and various sources, including Bach himself, suggest that they were used not only in chorale preludes, but in continuo work. Tierce ranks, alone or as constituents of the Sesquialtera-Cornet, were indispensable for solo melodic lines in an organ chorale. Manual reeds were never numerous (even at Naumburg they accounted for less than 10% of the manual stops) and were, except Vox humana and Krummhorn, for chorus purposes, although pedal reeds at 16', 8' or both are found even in organs of moderate size. The Mixtures at Naumburg were more in the bright German tradition than Silbermann’s pleins jeux, and the pedal reeds (32', 16', 8', 4') had something of Silbermann’s élan. A contemporary critic of one of Hildebrandt’s organs in Dresden thought its tone dull and heavy, owing to increased wind pressure, higher cut-ups, and new voicing methods in general which spoilt the Praetorian ‘Lieblichkeit der Harmonie’. But such factors were characteristic of the new mode of the 1730s and 1740s in general, and ‘gravity’ in an organ was praised by Bach and others.
In view of the cross-currents in German organ design from 1700 to 1750, it is not surprising that Bach should have left only a few registrations, and those only of a general nature. The published Schübler chorale preludes (c1746) make it clear whether the pedal is a 16' quasi-continuo bass line or a 4' cantus firmus melody line, but they do not specify colour. The manual Prinzipal 8' and pedal Trompete 8' registered in the autograph manuscript of the Orgelbüchlein prelude bwv600 are there as much to indicate that the canonic voices are to sound an octave apart as to suggest actual stops to be drawn. For a concerto or a prelude and fugue it is rarely clear on whose authority the manuals (and particularly the manual changes) have been specified in the manuscript copies. The subject is thus open to many solutions and suggestions. But on no single organ that Bach is known to have played would all his organ music have sounded at its best or been given a registration suitable to its carefully conceived style and genre.
Between 1725 and 1750 a large number of important organs were built: the great organs of Haarlem, Gouda, Weingarten, Herzogenburg, Naumburg, Dresden, Breslau, Potsdam, Uppsala, Catania, Pisa, Tours, Paris (Notre Dame), Granada and Braga. All these and many other organs of their type were designed both to fill their churches with big sound and to tickle the ear with delicate effects. Neither purpose was known to the 16th-century builder. The very tendency to build organs exclusively at the west end of the church pinpoints this move towards extremes of sound, for apart from the large conventual churches, and larger French parish churches, the new west-end organ was the only instrument in the building, especially in Protestant countries, where the need for a smaller auxiliary organ in the liturgy had largely disappeared and choirs, if any, occupied the west gallery. The generation of builders who produced the even bigger, later organs of the 18th century (Toledo, Saint-Maximin-la-Sainte-Baume, Hamburg Michaeliskirche, Rostock Marienkirche, Arnhem, Nijmegen, Amorbach, St Florian and Oliwa) or theorists who planned yet bigger ones (Vogt, B1719, and Bédos de Celles, B1766–78) were mostly seeking to exploit the same extremes.
Earlier, however, characteristic national developments had frequently resulted in organs which, though conceived within classical limits and not, as it were, stepping outside idiomatic, traditional usage, nonetheless had greater potential than their composers seem to have been aware of, although improvisation was widely practised, an art of which we have little concrete knowledge in this period. Thus the problem with organs of 1650 to 1750 is to know for certain what they were meant to play and how they were meant to sound, whereas the problem with organs of 1750 to 1850 is that the music for which they were built, often with great ingenuity and unsurpassed technical skill, may be difficult to admire.
Two good examples of the northern organ about 1650 are at Klosterneuburg and Alkmaar; both retain many features of their originals in spite of extensive rebuilding. Much is still unknown, however, of the detail of the originals, and it is necessary to rely on the stop-lists, given in Table 25. At Klosterneuburg neither the Brustwerk nor even the Rückpositiv competes with the main chest (Hauptwerk and Pedal), either in sound or in appearance. The Hauptwerk dominates the ensemble, in the true 16th-century tradition of central Europe; perhaps it, not the pedal, was originally meant to take the 16' pipes in the case. The instrument should be seen not so much as a three-manual organ but as a group of three independent organs: Hauptwerk for postludes etc., Rückpositiv for interludes, solos and major accompaniments, Brustwerk for continuo. It is uncertain whether the organ originally had manual reeds, other than the Regal; but mutations are also few, and colours were obtained by a variety of 8' and 4' ranks. 8' colour stops were becoming very popular throughout the area Vienna–Ulm–Prague–Vienna, and on paper the main chests of such organs often appear misleadingly large. 14 out of 28 stops at the Týn Church, Prague (J.H. Mundt, 1671–3), were on the Hauptwerk, 16.8.8.8.8.8.4.4.22/3.2.11/3.1.VI.IV, but four of the 8' stops were colour changes, not chorus ranks. Salicional 8', Viola 8' and similar stops were characteristic of late 17th-century Habsburg Europe; Salicet 4', Fugara 4' and Dulciana 4' were common by the early 18th century; and reeds, except a pedal rank or two, gradually disappeared. Theorists like the Cistercian writer Vogt (B1719) emphasized 8' colour stops; and for such registration rules as those given by J.B. Samber (Manuductio ad organum, i, Salzburg, 1704), the conical Viola 8' was useful in many varied combinations: continuo playing, Viola 8'; fantasias, Viola 8' + Flöte 4'; fugues, Viola 8' + Mixtur III; versets, Viola 8' + Zimbel II.
Soon after the organ at Klosterneuburg, organ cases in the area became divided into a kind of Habsburg equivalent of the Werkprinzip design, with one case for the Hauptwerk, one for the Pedal and one for an Echo chest (Waldhausen, 1677). Such division led over the years to a rigorously applied design followed by most Austrian organs of the mid-18th century, with a half-case to one side of the west-end gallery (Hauptwerk), a second half-case to the other (Pedal) and a Rückpositiv in front, the total gallery being spacious enough to accommodate a considerable choir and orchestra for the Mass on feast days. By 1740 or so, the keyboards would be placed (in the form of a detached console) in a commanding position on the gallery floor, and the various parts of the case strewn around the west-end windows, as in the large monastery organs of Ochsenhausen, near Biberach, or Weingarten. In theory such an arrangement might encourage idiomatic, two-chorus organ music of the north German type, but in practice it did not.
Little is known about the music played on the great series of Dutch organs built between the death of Sweelinck (1621) and the vogue for Bach’s music two centuries later. But the array of mutations and flute and reed colours on the Laurentskerk instrument at Alkmaar would have made possible an immense variety in the settings of, and variations on, psalm tunes (probably improvised, as they are today). In the 1685 rebuild the Hauptwerk chest had to be lowered (fig.43), perhaps because by then the organist wished to be able to accompany the congregation during hymns (but such accompaniment was then still new). It is clear how the Alkmaar organ developed from the Brabant organ of Niehoff with its limited pedal, big Hauptwerk chorus, 8' Rückpositiv used for solo effects, and a quasi-Oberwerk (here placed below the main chest, however) with stops found on the main manual of other European organs. According to John Evelyn’s diary, such Dutch organs were used ‘only for show and to recreate the people before and after their Devotions, while the Burgomasters were walking and conferring about their affairs’. By association, then, the organs were secular, often indeed owned by the town council, who saw such magnificent creations as objects of rivalry. Hence the building of the organ at St Bavo, Haarlem, by Christian Müller (1735–8) is to be seen as a sign of competition with Zwolle (Grote Kerk; new organ by Schnitger’s sons, 1718–21), Alkmaar (rebuilt 1723–6), Amsterdam (Oude Kerk; Christian Vater, 1724–6), Gouda (Jean Moreau, 1733–6) and elsewhere. Moreau was from the south; but Müller, Vater and F.C. Schnitger were German, and from then the Dutch organ was dominated by German builders who imported new ideas (big pedals from Hamburg, heavy voicing from Westphalia), added them to Dutch features, and produced large, powerful instruments, but unfortunately often without either German brilliance or French éclat (thin reed trebles and a Cornet designed to outline the psalm-tune melody rather than to function in a grand jeu). Marcussen mistakenly tried to ‘correct’ the organ at Haarlem in 1961 with new pedal Mixtures and a new Great Mixture which attempted to convert the 16' to an 8' chorus and which was reversed in the 1980s. Although such tonal matters are subjective, the cases themselves can be more clearly seen to have lost their native Dutch characteristics, particularly the well-featured, classical designs of the 17th century, and to have begun to sprawl. It is true that, at Haarlem, Müller and his architect kept the traditional vertical emphasis and other essential details in the arrangement of towers and flats; but even there the classical pediment surmounting the best old Dutch cases gave way to an unstructural, Baroque coat-of-arms (fig.44).
Although the condition of the organs at Weingarten and Haarlem is nothing like as authentic as their fame leads admirers to assume, they do serve on paper (Table 26) as useful examples of their ‘schools’, being at once both traditional and exceptional, both formative and unapproachably ‘ideal’. The details of the Weingarten organ – the bells, the cherrywood stops, the ivory pipes, the doubled ranks, the undulating stops, the big Mixtures, the complex action – require a book to themselves, and it could be that a first-rate restoration of the instrument would fill out its tone. Nevertheless, the principles behind its dispensing of organ colours can be seen, and Gabler’s little quire organ in the same church contained an even clearer indication of his passion for 8' and 4' colour stops. Some writers have described the west-end organ as a ‘Rococo-Gothic conception’, but it is more like a southern European grotto organ. Three echo-like divisions (Oberwerk, Unterwerk, Kronpositiv) are bound to lead to a mocking of true organ tone, however logical an extension it may have been of current ideas in south Germany as a whole. Only the two Rückpositive offer well-balanced effects in the idiomatic north German manner; yet to an 18th-century organist visiting Weingarten after Salzburg Cathedral (organ by J.C. Egedacher, 1703–6) such Rückpositive must have seemed conservative and slightly puzzling. The original mechanical action must have been very troublesome to make, since even in this sprawling and unique case (fig.45) only eight of all the case pipes do not speak; clearly the detached console was the only practical arrangement. The influence of the whole instrument was wide and long-lasting; theory books (e.g. HawkinsH; Bédos de Celles, B1766–78) gave it notoriety, and it held a significant position between the colourful Renaissance organ of south Germany and the large factory organs of the 1830s.
Swabia also saw a remarkably good compromise organ during the 1760s: the larger instrument at Ottobeuren, built by K.J. Riepp (1761–8), incorporated French elements (learnt by its builder in Burgundy) and German ones (learnt in the vicinity of Lake Constance). Most major organs in both parish and conventual churches in Switzerland, Württemberg and Bavaria had such a mingling of organ cultures as to create distinct styles of their own; but the one at Ottobeuren was a simple amalgam. All the classical French registrations were possible on it, but so were German pedal music and hymn variations, from the evidence of its stop-list.
Such composite schemes were curiously rare in the 18th century. It was more characteristic of organ building in general that even adjacent areas (e.g. Carinthia and Veneto, or Saxony and Bohemia) had totally different organs, as if builders of one area or religious denomination were thoroughly opposed to the ideals of their neighbours. Some of the major religious orders, particularly the Cistercian and Augustinian, had something of an international style crossing political frontiers, but even this kind of uniformity was not conspicuous. It was regional style that carried the day, giving the organ at Klosterneuburg, for example, great influence over the one built nearby a century later by a foreign builder well versed in other organ types (Augustinerstift, Herzogenburg; J. Henke, 1747–52). It may well have been such provincialism, however, that helped to produce the good, conservative designs (Amorbach; Rot an der Rot), the late flowers of Baroque organ art that were able to resist the extremes of fashion.
The large organs of the late 18th century were individually distinctive, keeping regional characteristics despite the availability to organists of many printed sources of music from other countries. The Michaeliskirche in Hamburg had a 70-stop, three-manual organ by J.G. Hildebrandt (son of Silbermann’s pupil Zacharias Hildebrandt); although he took with him many Saxon colours (Cornet, Unda maris, Chalumeau etc.) and followed contemporary ideas common to many regions (no Rückpositiv, thickening Quints etc), the instrument remained a Hamburg organ, more complete and comprehensive than an organ could have been anywhere else. The massive case (for which Burney did not care) has an appearance that anticipated the 19th-century; the stop-list (Table 27) is typical of a large organ, but many writers who heard the instrument commented on its ‘noble power’, described by Burney as ‘more striking by its force and the richness of the harmony than by a clear and distinct melody’. Yet the organ was no mere sacrifice to fashion, which was then rather geared to imitations of orchestral families, of wind concertos, and the like. Theorists like Hess and Knecht encouraged particular imitations of string stops and in general helped to deceive organists into thinking they could duplicate orchestral effects. So did G.J. Vogler, who typifies the less reputable side of late 18th-century organ playing, and whose bizarre organ-concert programmes sometimes proved irresistible to popular audiences in large cities from London to Vienna. Vogler’sSimplification system, however, has received more attention than it merits historically, for the development of the organ would probably have been little different without him. More important was the impasse brought about at the end of the century by the technical perfection of the late Baroque organ. Quite apart from the Napoleonic disruption, the organ historian must feel that the multiplied colour stops of St Florian and Oliwa monastic churches (1770s), the reeds of Saint-Maximin-la-Sainte-Baume, Poitiers and Toledo, and the choruses of Hamburg and Rostock parish churches, all pushed the classical organ as far as it would go. A total rethinking was necessary early in the next century.
The first organs in the Americas were brought from Spain to Central America by Franciscan and Dominican missionaries in the mid-16th century. During the 17th century the use of organs – both imported and locally built – was widespread throughout Spanish colonial America: 17 small organs are reported as being in use in 1630 in what is now New Mexico. (See §V, 9, above.) By the early 19th century small organs were used in most mission outposts, including some in present-day California. In the northern French colonies, there was a church organ at Quebec City as early as 1657, and between 1698 and 1705 a two-manual organ was imported for Notre Dame, Montreal.
The first documented use of an organ in a church in the British or German colonies of the eastern seaboard dates from 1703. A small German religious colony had settled near Philadelphia in 1694, apparently bringing with it a small positive organ, and this was lent in 1703 for use at a Lutheran ordination ceremony in the ‘Old Swede’s’ Church, Philadelphia. In 1713 a four-stop chamber organ of the ‘Father’ Smith school was placed in King’s Chapel, Boston; it was mentioned as early as 1708 in connection with its original owner, Thomas Brattle, by the diarist Samuel Sewall, and it may have been imported before 1700.
English organs, including some significant examples of the work of Bridge, Jordan, Green, England and Snetzler, continued to be imported in increasing numbers to the eastern coastal colonies during the rest of the 18th century. The first person known to have built an organ in the colonies was Johann Gottlob Klemm, a Saxon who emigrated in 1733 and who built several organs, the largest of them a three-manual instrument completed for Trinity Church, New York, in 1741. His work was carried on by his apprentice, David Tannenberg, who built more than 40 organs between 1758 and his death in 1804, many for Moravian churches in a small area of Pennsylvania (fig.46). His largest instrument, however, was built in 1790 for Zion Lutheran Church in Philadelphia. Other German-born builders, notably Philip Feyring, were active around Philadelphia during the late 18th century.
Tannenberg’s work reflected the influence of the central German school, as transmitted by Klemm, but he also kept pace with newer European developments and was familiar with the writings of the theorist G.A. Sorge. Following in his footsteps were Conrad Doll and several generations of the Krauss and Dieffenbach families, who, culturally removed from the urban mainstream of East Coast organ building, continued to produce small organs in the ‘Pennsylvania Dutch’ tradition for rural churches well past 1850.
Puritan (Calvinist) objections to the use of instruments in worship prevailed throughout the northern colonies until the last decade of the 18th century, so that most of the early church organs were built for the Anglicans, Lutherans and Moravians. There is also evidence for a number of domestic chamber organs in this period. Most organs (of all types) were still imported, but after the mid-18th century a few American-built instruments began to appear in the colonies north of Pennsylvania.
The first true organ builder in Boston was Thomas Johnston, who, beginning about 1753, built a small number of church and chamber organs modelled after imported English instruments. Among his followers were Josiah Leavitt and Henry Pratt, both of whom built several small church and chamber organs, primarily for rural churches west and north of Boston. The prejudice against instruments began to break down in churches of the Puritan tradition by the 1790s, creating a new demand for church organs that was largely met by American builders.
These early New England builders were essentially self-taught and supported themselves only partly through organ building. New York and Philadelphia, however, attracted some English-trained builders during the final years of the 18th century. One of the earliest to arrive was Charles Tawse, who in 1786 advertised himself as a builder of ‘finger and barrel organs’ in New York. He later moved to Philadelphia, where he was joined in 1795 by John Lowe, trained in the workshop of Gray of London. The most notable emigrant, however, was John Geib, who shortly after his arrival in New York around 1798 built several substantial church organs, most of them for New York, although some went to other cities including Providence, Rhode Island.
2. 19th-century technical advances.
5. The organ in the early 20th century.
Organ, §VI: Some developments 1800–1930
A significant amount of rethinking did not occur until well into the first half of the 19th century. In some countries, notably Italy, England, the USA, the Netherlands and Scandinavia, no significant change in direction was evident until the second third of the century; the chief difference between an average organ of 1790 and 1840 in these countries was that the latter was bigger, and the builder had probably explored further the simple colour stops, Swell boxes and pedal departments. But colour stops were by nature foreign to Scandinavian organs, pedals to English and American, and Swell boxes to Dutch. In other countries, notably France, Spain, Austria, central and southern Germany and their neighbours (Bohemia, Poland etc.), events outside music not only caused organ building to stagnate in the late 18th century but ultimately gave to the revival of organs in the 1830s an impetus towards new techniques.
In Austria the reforms of church music undertaken by Joseph II during the 1780s encouraged simple organs in parish churches – instruments contrasting hugely with the large monastic creations of St Florian (1770) and Heiligenkreuz (1802). In countries occupied by the French in the wake of the Revolution, such as the Netherlands, Spain, south Germany, Austria, Prussia, Poland and Moravia, church services were often suspended. Only here and there were organs destroyed; more physical damage was done in France itself, where the Revolution was followed by a scarcity of funds and then, after 1815, an equally harmful overreaction: from 1792 a church may have been closed to Christian use but its organ was just as useful for ‘awakening and inspiring a holy love of the Fatherland’, as the new département administrators knew. But in southern Germany and Austria it was the dissolution of the monasteries (particularly after 1803) that changed organ tradition. In Spain and Portugal the organ suffered an eclipse, only partial in some areas but severely evident in others, taken in the wake of Wellington’s and Napoleon’s armies and by the reappropriation of church funds in 1830. Further north, Denmark kept its organ traditions largely undisturbed, but Sweden produced some advanced ideas in the 1820s, not least as a result of cultural ties with Saxony and central Germany.
Some of the important influences on organs and their music at the end of the 18th century were more directly musical. One was the theory of difference tones (see Difference tone), quite familiar to theorists since Tartini. Vogler’s ideas were based in part on the observation that the exploitation of harmonics might enable builders to dispense with large pipes, the combination of 16', 102/3' and 62/5' for instance, producing a 32' effect. But the idea is essentially naive, and Vogler must have had other assets to justify the respect with which he was held in Sweden and Salzburg.
A second major influence, or a symptom of the new emphases, was the idea propounded by J.H. Knecht (1795) and others that the organ was a kind of one-man orchestra, its three manuals having an orchestral spectrum of strings, brass and woodwind. To this end, Vogler’s specially made travelling organ, the Orchestrion (see Orchestrion (1)), was hawked all over Europe during the 1790s. There was of course nothing new either in stops imitating string instruments or in regarding the organ as a ‘compendium of all instruments whatsoever’ (Mersenne, 1636–7); nor were organ transcriptions new, being as old as written-down organ music itself. But by 1800 the orchestra itself was heavier, more stratified and conventionalized, and, most significantly, more expressive than it was in 1600, and imitations of it would therefore be further removed from the nature of the organ as then known.
A third factor was the general assumption that the hundreds of new parish church organs of average size required by about 1820 were to be built chiefly for the sake of accompanying the congregation, for which unison pitches, especially 8' stops, were the most useful. This may have been partly because mutations were less carefully made in a period of quickly built organs, partly because intelligent theorists like Wilke despised Voglerian claims about harmonic stops, and partly because Mixtures were difficult to justify in theory. Some of the ill-repute of Mixtures in the period may also have been due to their all-too-common Tierce rank (particularly ill-suited to equal temperament, which was coming into use in this period in all countries save England and the USA, where it was not accepted until the 1850s). Such an organ as that at Karlskrona, Sweden (P.Z. Strand, 1827), might have got its characteristic specification, whatever its voicing, in reaction to poorly made mutations and Mixtures too often met with at the time: ..\Frames/F922883.html
A further influence on the design of organs soon after 1820 was the more international scope of the repertory available to an average organist. In England, for example, such firms as Boosey imported an immense amount of German organ music of all kinds during the first few decades of the century, including a translation of Rinck’s popular tutor, Praktische Orgel-Schule (Eng. trans., 1825). These imports reached their culmination in the international Bach revival. Bach sonatas and other major works (‘Grand Preludes and Fugues’) were available shortly after 1800. Partly in response to this, many older English and French organs, and some Italian and Spanish, were being altered by 1840: pedals added, short-compass manuals completed, second choruses added. The result, however, was not that national organ types lost their identity but that they kept it in a less overt and certainly less charming manner. No doubt this situation was in part due to the ‘organ ethos’ of the period: a general anti-Baroque view of organs as sombre, solemn, ecclesiastical and ecclesiological objects whose music (as can be seen from Vincent Novello’s travel diaries) was expected to be more ‘elevated’ than the galanteries of the previous generation. But it prompted organists of different national schools to suppose that their organ alone was the best for Bach; countless English organists, for example, have resisted the idea that Bach did not write for the Swell pedal.
Apart from the details produced by such factors, several general observations can be made. There were strangely few magnificent organs built anywhere between 1800 and 1825, and the new big instruments of 1825–50 show a bigger break with the past than those of any other period in organ history. Casework as well underwent extreme changes in design and ornamental detail. While it is probably true that in 1830 churches spent less on their organs than they did in 1730, the later organs were in fact larger. The sounds the new organs on the Continent were expected to produce accorded with the sobriety and gloom of the post-Revolution church, although the organist had a more variegated repertory to choose from than at any previous period. Few great organ builders stand out between 1800 and 1825, and major practical and theoretical developments were left to the next generation. Some conservative areas, however, kept their traditions: the Brustwerk of 1898 at St Anders, Copenhagen, must be regarded as a survival rather than a revival.
In the USA, particularly in Boston and New York, a native school of builders was rapidly developing in the early 19th century to meet the demands of the many new churches in the expanding cities and prospering rural areas. These builders, notably Goodrich and Appleton in Boston, and Erben and Hall in New York, worked in the refined style inherited from 18th-century England and may be said to have brought it to its final fruition. Attractive as their instruments often were, both visually and tonally, their musical use rarely transcended the needs of a fairly simple church service, and the music of Bach was almost certainly not attempted by American organists until the second half of the century. By the 1850s the effect of continental developments, both tonal and mechanical, was being felt, and large factories (such as that of E. & G.G. Hook in Boston) began replacing the small workshops.
Organ, §VI: Some developments 1800–1930
Audsley’s monument to the Romantic organ, The Art of Organ-Building (B1905), shows that the organ builder of about 1900 had a vast array of pipework to choose from; he also had many types of chest, action, bellows, gadgets and case designs at his disposal. On the whole Audsley was describing a high-quality instrument, but the profusion of elements he described affected the smallest and cheapest builder. Similarly, the organist’s repertory was in theory immense, although in practice quite restricted, save in the case of the recitalist. It was towards these two positions of technical and musical profusion, of embarrassing choice for both builder and player, that the organ gradually moved during the 19th century.
Different areas of Europe exercised major influence at different periods, and often an individual builder advanced concepts or techniques without which the overall development would have been different. Publicity for a new idea became increasingly easy (particularly from such concourses as the Great Exhibition at London, 1851, and the Centennial Exposition in Philadelphia, 1876); builders travelled far to view developments, published (and read) papers or became associated with well-known theorists, and began to take commissions farther from home than they had been used to doing. New and rare stops were introduced into such foreign organs, perhaps sometimes for ostentation (e.g. Schulze’s three-sided and cylindrical wooden pipes at Doncaster, 1862). An advanced organ of 1825 anywhere in Europe would at any rate have features gathered from various sources: from changing taste (multiple string stops), theory book notions of harmonics, quick factory methods, foreign influences (e.g. English Swells) and new visual ideas. 40 years later the amalgam was yet richer, and large organs produced in the factories of Walcker, Sauer, Willis, Hill and Cavaillé-Coll were taken all over the world.
Thus the developments about 1825 in central Germany had an influence throughout Europe, not least because English and French organs of the period were particularly susceptible to new ideas. The theorists Wolfram (B1815), Seidel (B1843) and above all Töpfer (B1833, B1843, B1855) were better known in Hamburg, Paris and London than Praetorius had been. Töpfer’s new scientific description of the techniques of building (with tables and technical details for pipe-scales, wind-chambers, pallets, bellows, action etc.) were immensely useful to every new builder. His ratio for pipe-scales (Normalmensur, known in English as Normal Scale or Diapason Norm) was a theoretical model, not honed to the particular conditions of any church or local tradition; but it was adopted by builders of cheaper, commercial organs. Better builders such as J.F. Schulze also found it useful, and in itself it is not far removed from what had been customary in central Germany.
Töpfer’s calculation was that the area of the cross-section of a Principal pipe was √8 multiplied by the area of the cross-section of a pipe an octave higher. Pipe diameters therefore halved at the 17th inclusive pipe (i.e. eight whole tones above), as they had for many an organ before Töpfer (see §III, 1, above). Such a simple constant was convenient at the workbench, as were Töpfer’s other formulae for calculating the wind consumption and the height of the pipe mouth. Meanwhile the improved bellows and reservoirs of his period not only allowed copious wind and constant pressure but encouraged builders to experiment with higher pressure for the pipes or with pipes scaled to either extreme. Since organists now demanded to be able to play with thicker registrations, these other formulae were at least as important as constant scalings.
Many of the experiments were short-lived. Free reeds were popular in central Germany and Alsace from about 1780 to 1850 but not often elsewhere, although Gray and Davidson used 32' free reeds at the Crystal Palace (1857) and Leeds Town Hall (1859), and they were sporadically used as a novelty stop in large American organs as late as the 1870s. New materials, such as the cast-iron case and zinc pipes at Hohenofen (1818), became associated with poorer instruments once the novelty had worn off, and only zinc, useful for larger pipes, has stood the test of time. Solo manuals were reserved for the largest instruments, and double pedal-boards were used by Walcker in a few of his largest organs, but octave couplers and detached consoles never lost popularity once they had gained it soon after 1830. In England, Swell boxes were constantly improved, most often with a view to reducing the closed box to a true pp (Hodges of Bristol, 1824), and their influence soon spread to France. In Germany, J. Wilke wrote major articles during the 1820s in the Allgemeine musikalische Zeitung listing experimental devices for producing Swell effects such as triple touch, operating couplers or bringing on more stops as the key was depressed; lowered wind pressure brought about by a net curtain in the wind-trunk (Vogler); ‘roof swells’, devices for raising the lid of Swell boxes; and ‘door swells’ or ‘jalousie swells’, the English systems of (horizontal) Venetian shutters, perhaps encasing a complete organ. For most of the century, the Swell box mechanism remained simple: horizontal shutters were controlled by a wooden or metal foot-lever to the right of the pedal keys, which had to be notched into position if the box was to remain open. With such pedals, gradual crescendo or diminuendo was impractical, and had to await the development of vertical balanced shutters towards the end of the century. Only occasionally were other systems experimented with, such as Bryceson’s hydraulic system of about 1865 in which water was communicated along a lead pipe from the pedal to the Swell mechanism, but remote control of the Swell shutters did not become practical until the development of pneumatic mechanisms, and even then the French continued to favour a mechanical connection.
The resulting organ of about 1840 was usually a compromise between old and new. At Halberstadt Cathedral, for example, J.F. Schulze built a four-manual organ in which three manuals and pedal were of the large, standard classical type familiar in the later 18th century, and couplers and accessories were conventional, even to a Zimbelstern; but the fourth manual, its purpose very unclassical, played new stops in a high Echo chest: ..\Frames/F922884.html
Such Echo organs were a luxury, like apse organs in a few English cathedrals a century later. More popular in the advanced organ of 1850 were the Solo organ, often on higher wind pressure, and the full Swell organ with its characteristic 16' reed and bright Mixture (Henry Willis, 1855). In Germany, Swells of the distant Echowerk type remained popular with builders such as König (St Maximilian, Düsseldorf, 1855).
It was E.F. Walcker who is said to have invented (or improved) the cone-chest (Kegellade, see fig.9), which he patented in 1842. Cavaillé-Coll, Willis and other great builders rejected it, as did American builders after a brief experimental attempt by the avant-garde Boston builder Simmons in his organ for Harvard University (1859). In America, cone-chests were briefly attempted a decade later (again unsuccessfully, owing to the adverse effects of the climate) by the immigrant Moritz Baumgarten, who had trained with Walcker. But Walcker’s output was immense, and certainly the boom in north European organ building meant that the more systematic a builder’s concepts (and hence his workshop), the bigger part he could play in providing organs for the hundreds of new parish churches of that period. Metal-planing machines, for examples, were drawn by Töpfer and manufactured by Walcker; such machine tools provided pipe metal of great precision and uniformity, obviating all capricious and ‘imperfect’ elements in pipe manufacture. The Walcker firm moved to Ludwigsburg in 1820 and was able from there to command a vast area of central Europe, and eventually to export worldwide. Its organ for the Paulskirche, Frankfurt (1827–33), was highly influential, with its 74 stops on three manuals and two pedal-boards; but it too was a compromise. The 14-stop Swell was a large Echo organ, with free reeds and Dulcianas; the action was mechanical, the chests slider-chests, the couplers standard. However, the Swell mechanism was balanced, and once the free reeds were replaced by long-resonator reed stops, the specification became standard. Indeed, the whole Walcker style had great influence, from the Rhine to the Black Sea. But in 1849 (Ulm Minster) and 1863 (Music Hall, Boston, USA), Walcker monster organs still had not outgrown compromise; more thoroughly modern designs were achieved by builders less set in their ways, such as A.W. Gottschalg whose large organ for Cologne Cathedral was influenced by Cavaillé-Coll. The influence of the Walcker instrument in Boston on American organ building, already well established in its own conventions, has been much overrated. The cone-chest had already been tried and rejected, Americans continued to develop their own scaling and voicing systems (although influenced by Töpfer and other theorists and by general European trends), and the only real novelty, the free-reed stops, enjoyed but limited vogue. The importation of the Walcker organ was, in truth, an aberration, for in the period in which it was built the major American builders could and did produce large, well-engineered and tonally sophisticated Romantic organs for large churches, cathedrals and concert halls (Mechanics Hall, Worcester, Massachusetts: Hook, 1864).
In France much important work was done during the 1820s and 1830s before Cavaillé-Coll began to dominate the scene. The Englishman John Abbey went to France (at the instigation of Erard) to work in the late 1820s, taking with him the improved English horizontal bellows, Venetian Swell, balanced action and refined voicing, and rebuilding organs from Reims to Caen. His Swell at Amiens in 1833, for example, resembled a typical English Echo organ of 1750: 8.8.4.V.8.8. Further east, Daublaine & Callinet came under the Walcker influence with their free reeds, double pedal-boards and general specifications in a few large organs, but essentially Callinet and his fellow-Alsatian Stiehr remained conservative. Their small and average-size church organs retained the basic classical physical and tonal layout in the mid-19th century, but with some suppression of upperwork and introduction of Gambas and Harmonic Flutes, and with the use of free reeds with resonators, primarily in the Pedal. By 1841 Cavaillé-Coll was making overblowing stops, both flue and reed. His new scheme that year for the organ of St Denis is discussed in §3 below.
High pressure was applied to reeds in England by the late 1830s, the first well-known example being Hill’s Tuba mirabilis at Birmingham Town Hall (1840). But although by 1855 Hopkins could write that ‘stops of this kind are now made by nearly all the English organ-builders’, no real technical details are known of these early stops. On the analogy of wood and brass wind-instrument playing in general, treble pipes in the reed ranks were also put on higher pressure in larger organs from the organ of St Denis onwards. This of itself was a major advance, as can be readily seen by comparing a Trumpet at St Sulpice with one at Haarlem. For centuries French builders had appreciated that reed trebles needed ‘boosting’ if the splendid bass was not to peter out above g' or so: hence one of the functions of the mounted Cornet in the 18th century. Cavaillé-Coll’s overblowing double-length flue and reed pipes were thus new not in principle but in character. A Flûte harmonique or Trompette harmonique is so made for bigger, rounder tone and, unlike the narrow-scaled overblowing flutes of the 17th century, always requires strong, copious wind. The formation of nodes in overblowing flue pipes is helped by a small hole piercing the pipe rather less than halfway along from the mouth, the exact position affecting the overtone content of the pipe. In reeds, the hole is not necessary. The tone of neither flue nor reed harmonic pipes blends idiomatically with the Principal chorus; 17th-century builders therefore reserved such flutes for solo colour. Reed and flue harmonic stops show the desire felt in the 1840s for smooth reeds that stay in tune, and precisely voiced flue stops with no initial ‘chiff’ (a puff of wind articulating the start of each note) or articulation. Full- or double-length resonators gave smoothness to the reeds, while in flue pipes the chiff was eliminated by a heavier nicking of the languid, by ‘ears and beard’ (see §III, 1, above) and by roller-beards (dowels, circular in section, placed between the ears near the windway), all aiding prompt, smooth speech.
Further technical advances made between 1825 and 1845 concern the action. Many 19th-century builders were ingenious with purely mechanical devices for such accessories as double Venetian swells (H. Willis, Gloucester Cathedral, 1847), stop-combinations (Ladegast, Sauer, Roosevelt), crescendo pedals (Haas) and various couplers. Improved bellows-with-reservoir, greater application of two or even more wind pressures in an organ, improved slider-chests (and eventually cone-chests) were all at the skilled builder’s disposal by 1845. So was the ‘Barker lever’ or mechanical-pneumatic action (see fig.8). By 1833, Booth in England and Hamilton in Scotland had constructed such actions. C.S. Barker worked on power pneumatics and compressed air, offering an apparatus to York Minster (1833), Birmingham Town Hall (1834–5) and, in France, to Cavaillé-Coll (1837). The pneumatic principle could also be applied to sliders and to such accessories as ‘thumb-pistons’ (H. Willis, 1851). Barker’s French patent was taken out in 1839, and he applied his action to the organ under construction at St Denis by Cavaillé-Coll, whose high-pressure stops were indeed said to have been unplayable without this key-action. It was probably also in France that the first fully pneumatic action was made, in which all the tracker’s backfalls, squares, rollers etc. were replaced by one pneumatic tube from key to pallet. The system is accredited to P.-A. Moitessier (1845), and was later modified with a partly mechanical action (Fermis, 1866) and adopted by such major builders as Willis (the divided organ at St Paul’s Cathedral, 1872). Although Walcker applied this so-called tubular-pneumatic action to his cone-chests in 1889, the action gained only a minor success outside England (and, to some extent, the USA) because the action was sluggish when the keys were too far removed from the chests, although it was used extensively in Australia and New Zealand until well into the 20th century. As for the chests themselves, English, American and French builders preferred improved slider-chests to barless chests, often modifying the larger pallets with a secondary mechanism allowing them to be opened without undue key-pressure (Willis patent dated 1861, etc.). Audsley was witness to much American activity in designing ‘pneumatic chests’ in the late 19th century. Around the turn of the century, American builders such as Estey developed a reliable tubular-pneumatic action using ventil-chests, which they employed quite extensively, as did Möller and some of the Midwestern builders, and Steere obtained the rights to the system developed by the German builder Weigle. But other builders, such as Hook & Hastings, Hutchings and, in Canada, Casavant, went almost directly from Barker-machine mechanical to electro-pneumatic actions.
Electric actions were devised during the same period in England (Wilkinson 1826, Gauntlett 1852, Goundry 1863) and France (Du Moncel, Barker, Stein & fils), but these early experiments were incapable of reliable practical application. Electro-pneumatic action (see fig.11) overcomes the difficulty of directly opening a pallet by electro-magnets in that the magnet opens instead the smaller valve of a pneumatic motor which then opens the pallet. One such system is usually accredited to Albert Peschard (c1860); as a result of his work Barker took out a patent in 1868, and in turn licensed Bryceson to build such an action in the Theatre Royal, Drury Lane (1868). According to Hopkins, an electrification for the organ at Gloucester Cathedral for the Three Choirs Festival of 1868 allowed the keyboards to be placed nearer the conductor, far from the pipes, an obvious and updated version of the ‘long movements’ of the tracker-action organ used in the 1784 Commemoration of Handel in Westminster Abbey. A decade or more before the end of the century Walcker in Germany, Merklin in France, Roosevelt in the USA, Casavant in Canada and Willis in England were all producing reliable electric actions which allowed them to build detached consoles some way away from the organs high up at the west end or in a triforium gallery of the quire. The stop mechanism could also be operated electrically (Bryceson patent, 1868). Particularly in the USA, many electric actions and individual pipe-valve chests (‘barless’ chests) were patented and improved during the 1890s, becoming a norm shortly after 1900, some 25 years before the Willis firm, for example, turned exclusively to electro-pneumatic action. During the first half of the 20th century, most important organ builders throughout the world devised one or other type of electro-pneumatic action (see Whitworth, B1930). Clearly electric systems could serve accessories such as stop-combinations (whereby a button or switch of some kind could bring on pre-selected stops), or Swell pedals operating shutters around part or all of the pipework. Much of the ingenuity exercised on such accessories belongs to the early 20th century rather than the 19th.
Organ, §VI: Some developments 1800–1930
Reference has already been made to Walcker’s organ for the Paulskirche, Frankfurt, and Schulze’s for Halberstadt Cathedral. Walcker’s habitual scheme was close to such later 18th-century organs as that at the Michaeliskirche, Hamburg, with a large, heavy Great organ (often 32') and a Pedal booming and powerful yet removed from true chorus purposes. Other German firms such as Schulze and Ladegast seem often to have made a brighter sound, with large-scale Mixtures and a tonal chorus brash yet recognizably in a tradition. Schulze’s influence in England was considerable as his large, full-sounding Diapasons caught the taste of the time and influenced the work of builders such as Lewis for some decades after the Great Exhibition of 1851. Even his little colour stop, the narrow-scaled Lieblich Gedackt, became standard in English organs for the next 100 years. Such builders had a high standard of workmanship and the mass of ‘good solid pipework’ of foundational pitches in an influential organ like Sauer’s for the Thomaskirche, Leipzig, was seen as a great advance on earlier organs with their greater percentage of higher-pitched stops. The craftsmanship and materials in a major Cavaillé-Coll organ are immensely impressive, as are the spaciousness (allowing pipes ‘room to speak’) and complicated actions and the careful planning of several chest levels. The drawings of the various elevations, tiers and cross-sections of the St Sulpice organ, for example, are witness to one of the great engineering masterpieces of the 19th century.
The St Denis organ has a well-known position in organ history, and its restoration in 1987–8 enabled players and builders to evaluate it for the youthful masterpiece that it is. The casework had already been designed when several builders tendered for the work, and Cavaillé-Coll’s two plans of 1833 and 1841 show the great changes in organ building during that crucial decade. Flutes and mutations were reduced, overblowing stops were introduced, string stops added harmonic complexity, Barker’s action allowed new arrangements of the chests, and the wind supply was increased and improved. Despite its ancestry in Bédos de Celles’ scheme for a large 32' organ, the instrument at St Denis (Table 28) was a great step along the 19th-century path. The Bombarde and Pedal departments became an ideal for hundreds of French or French-inspired organs over the next century or so; the scaling throughout became wider than classical French, and the voicing, as well as the wind pressure, stronger. It is not always clear how Cavaillé-Coll intended his organs to be registered, but since such stops as the Flûte harmonique are simply new versions of the auxiliary 8' ranks drawn in old fonds d’orgue combinations, it is likely that he expected them to be used in choruses as well as solos (an interesting characteristic of the Flûte harmonique is that the upper range has a stronger, smoother character than the lower octaves, and one can play both solo and accompaniment on the same stop). Much the same could be said for the string stops (with tuning-slots at the top of the pipe) and the thick, stopped Bourdons. Nicking of languids was generally severe, at least in later organs of this builder; this, added to the slots cut into even the smallest Mixture pipes, aided smooth, constant tone. Conical and narrow-scaled stopped pipes were not conspicuous, and Cavaillé-Coll’s spectrum of pipe forms was not particularly great. The foundation stops (jeux de fonds) of one manual were placed on one wind-chest, the reeds and (sometimes) flute mutations (jeux de combinaison) were placed on another. Each chest could have its own wind pressure and each could be controlled by a valve (‘ventil’) that admitted wind only when required, thus allowing a registration to be prepared in advance, but not brought on until needed. The Grand orgue was never underbuilt in relation to the Swell, as it often was in England, nor did the reeds lose their brilliance. Feeder and reservoir bellows were generous, and the pneumatic action somewhat cumbersome in the space it took. As with Schulze organs, soundboards were ample in size for the boldly treated pipework. But neither electric actions nor general crescendo gadgets were found on Cavaillé-Coll’s organs; indeed, he is recorded as saying that he could see no advantage in the use of electricity. (His showroom is illustrated in Cavaillé-Coll, Aristide.)
In Italy, Serassi, like his French and English colleagues, ‘extended’ local traditions and made many quite large and impressive-sounding organs of a curious Venetian compromise. The main manual would control 20 or more stops, including 16' or even 32' Principale and flutes and Violas of 8' and 4'; most chorus stops were divided; the highest ranks were collected into Mixtures; and solo and chorus reeds were strong in tone. One or two subsidiary manuals, of six to ten halved stops often in a Swell box, provided echo effects but no true chorus. The compass was long (frequently from C'); the pedal organ had six to eight bass stops; and there were many accessories, both sounding (bells, thunder, drum) and mechanical (composition pedals, couplers, including octave and suboctave). Some flamboyant music was written for organs of this type, by V.A. Petrali, Giacomo Davide and others.
In Spain, organ building came to something of a standstill; with the exception of a two-rank Voz celeste, the stop-list of Pedro Roques’s 1870 organ for Cadiz Cathedral could have been written a century or more earlier. The farther cities of eastern Europe were completely conquered by central German and Bohemian organ building, organ repertory and organ players by the 19th century. The outposts of German organ art in east Prussia and Silesia had long known large instruments (both Protestant and Roman Catholic) and the new techniques led to wide dissemination of ideas. Occasionally a builder would try something new, such as Buchholz’s solo organ: 16.8.8.8.8.8.4, in the ‘Black’ Church (1839) at Kronstadt (now Braşov, Romania); but on the whole builders were more anxious to improve action, accessories, bellows and chests of the more conventional organs.
In many ways the country best able to develop its organ was England, where a new awareness of foreign designs and repertory coincided with favourable economic conditions and the growing popularity of organs in secular concert halls and large nonconformist churches. While much work remains to be done on the position of the organ in France and Italy during the period 1830–50, the general picture of the English organ is clear enough. During the 1820s, the Choir organ was superseded by the Swell as the major secondary division; pedals came to be regarded as normal (though at first only with a rank or two of large-scaled wooden pipes); the compass generally remained at G'; and organists did as well as they could with the newly favoured music of J.S. Bach – Das wohltemperirte Clavier being as much played as the true organ music. Much of the newness of the British organ before Henry Willis’s influential instrument for the 1851 Exhibition has been accredited to the friendship between H.J. Gauntlett, the composer and organist, and William Hill, organ builder and former partner in the firm of Elliot. About 1833 Gauntlett visited Haarlem, apparently on the advice of Samuel Wesley, and there are various hints throughout Gauntlett’s career as an adviser on organs that such instruments were in his mind. His personal library too shows him to have been a good example of the outward-looking early Victorian musician. Of the dozen or so organs built by Hill under Gauntlett’s influence, the one at Great George Street Chapel, Liverpool (1841), was the most indicative of things to come. Like Hopkins, Gauntlett knew enough German organ music to see the C compass as most useful for manuals, while S.S. Wesley favoured G' compass even on the new Willis masterpiece of St George’s Hall, Liverpool. Much the same reason lay behind Gauntlett’s scheme for the pedal departments of larger organs, for example the one at Christ Church, Newgate Street, London (a 1690 Harris instrument extensively rebuilt by Hill 1827–38); such a scheme (Table 29) presupposed ‘continental scaling’ and not the large open-wood pedal scales described by Hopkins as more than twice too large.
Cavaillé-Coll visited Hill’s workshops in 1844, as he did others at that period, and the influence they may have had on each other deserves closer study. The French, German and Italian stop names of many Hill-Gauntlett organs suggest at least paper knowledge of and interest in foreign organs; as late as 1871, Willis’s new organ for the Royal Albert Hall can be related closely to Cavaillé-Coll’s for St Sulpice. Hill’s Liverpool organ was a compromise between traditional English and new continental styles, with a 16-stop Swell (including 16' reed), a small Choir organ of flutes, a high-pressure Tuba played from the Swell, six couplers, five composition pedals, and a complete compass of C–d'–f'''. Hill also designed a new kind of pallet that slid open and admitted high-pressure wind without increasing the touch-resistance. Neither he nor Gauntlett felt obliged to give up the long-established tradition of combining many international features: their organ at St Olave, Southwark (1846), for instance, was almost Serassian in its big Great and its solo Swell. It was left to Willis’s organ for St George’s Hall, Liverpool (1855), to establish fully the ‘first modern British organ’ (Table 30), which remained an ideal throughout the British Empire at its apogee. Less opulent instruments by Willis and the builders he influenced would merely have had fewer choices of 8' and 4' colour. Large though such organs were, their priority was not necessarily traditional organ repertory; rather they encouraged even further the age-old regard for large organs per se, useful for transcriptions of orchestral and vocal music and impressive as engineering projects with such innovations as inclined stop-jambs, pneumatic thumb-pistons, concave and radiating pedal-board (perfected by Willis soon after 1851 but not adopted in America until the 1890s, and even later on the continent), Barker levers to each department, varied wind pressures, new wind-raising devices, pneumatic couplers and a Swell pedal. The Swell alone was a good example of the general attitude. Of the ‘double Venetian front’ at Gloucester Cathedral (1847), Willis himself observed that ‘the pianissimo was simply astounding’ but gave no reason why he thought this a desirable aim.
It was the crescendo and diminuendo of a British town-hall organ (Glasgow; T.C. Lewis, 1877) that led Hans von Bülow to write to the local newspaper and claim never to have ‘met with an organ so good in Germany’. Indeed, by comparison the German organ may well have seemed a dreary instrument, with little ability to blend or offer the organist much delight in its tone, touch or expressive musical potential. It can hardly be assumed, however, that the tone of new German organs did not occasionally delight; organists may well have liked the sounds produced by Schulze’s highly differentiated voicing in a small two-manual like that at Etzelbech (1869). Such an organ (Table 31) was utterly typical in its day, although in some ways Schulze was old-fashioned (e.g. with his diagonal bellows at Doncaster, 1862).
Much German organ music of the late 19th century was written for a large, sombre-voiced instrument which depended for effect more on weight and dynamic extremes than on the sort of colour provided by, for instance, Cavaillé-Coll’s Bombarde manual or Willis’s Swell. Indeed, the very size and gravity of such instruments is their chief musical attribute, and Liszt, Reubke, Reger and others capitalized impressively on these qualities. Specifications were often much more classical in appearance than their voicing and general tone justify. Extremes of timbre in the form of harmonic reed choruses were not much favoured, and it is not always easy to see exactly why a German organ, even in its various neo-classical guises, needed a third or fourth manual. The large instrument in Magdeburg Cathedral (Table 32), built by the firm of Reubke, expresses the potential sought by such composers as its scion Julius Reubke (1834–58). Walcker’s organ of 1886 for the Stephansdom, Vienna, was even less systematic, with an ordinary Pedal but a huge Great organ manual of 35 stops strewn over the west end, and two further manuals, yet only one stop was in a Swell box. Similarly, not until 1857 at Ulm did Walcker use the Barker lever and not until 1890 a fully pneumatic action. A lack of inventiveness was also evident in the stop-lists themselves: Sauer’s two organs in Leipzig both with about 60 stops (the Peterskirche, 1885, and the Thomaskirche, 1889) had almost identical specifications, both full of heavy 8' stops. Such were the instruments played by Reger and Straube, and for which registrations were fairly standardized. Thus 8' ranks were mixed freely, according to choice, but a 4' stop aided their blend, particularly a wide 4' above a narrow 8'. An organ that cannot provide an accompaniment of Gedackt 8' + Voix céleste 8' + Spitzflöte 4' voiced on late 19th-century principles cannot provide the sounds intended by Reger in his quieter movements.
Although the best of the 19th-century organs may now deserve the status of historical monuments, little musical sense can be made of such mature Romantic organs as Weigle’s at Lauterbach (1906), whose stop-list is given in Table 33. Such organs were not so much ‘Romantic’ as perversions of a legitimate ideal current from Gabler to Walcker; it is hard to see them being fashionable again. Weigle’s Stuttgart organ was criticized by Audsley (B1905) for making ‘absolutely no attempt to place at the disposal of the virtuoso the ready means of producing complicated orchestral effects or of massing special tone-colours’, which indeed was a high priority with performers of the day, who praised builders such as E.M. Skinner for providing such means.
As an example of fin de siècle development beyond the demands of organ music, the Great organ manual of Walcker’s Paulskirche organ, Frankfurt (1827), can be compared with its rebuild by the same firm 72 years later. The stop-list alone makes clear the change of taste and the manner in which the revision destroyed the early 19th-century monument: ..\Frames/F922886.html
Organ, §VI: Some developments 1800–1930
During the 25 years from 1889 to 1914 Hope-Jones contributed two major innovations: to key-action (electric, with stop-switches for registration, ‘double touch’ for keys and accessories), and to pipework and specification (large harmonic Trombas, very narrow Trumpets, heavy-pressure Diapasons with ‘leathered’ lips – i.e. with thin leather glued round the edge of the lip to reduce brightness, very narrow and keen-sounding string stops and wide-scaled open flutes). His diaphone pipe of 1893 was itself a new departure (see fig.21). Though no doubt more effective as a foghorn (an earlier version was accepted as such by the Canadian government, and diaphones were used as lighthouse fog-signals as late as the 1960s by the US Coast Guard), the diaphone is a good guide to the tone required by some musicians about 1900. Hope-Jones’s actions were too finely designed for organs (they were more effective in telephone exchanges), but the period was one of experiment in electrical technology and his contributions are important. So many devices or facilities, such as those enabling the organist to ‘prepare’ stops which remained silent until required, or to open Swell shutters one by one, were made much easier with electricity; so was ‘borrowing’ stops, still disapproved of by Audsley (B1905) but in principle leading to ‘unit-chests’, ‘extension organs’ and other systems using one rank of pipes for several purposes. Hope-Jones thus typifies a movement that led to such extraordinary achievements for their time as the stadium organ in Chicago (Barton, 1929) where 44 ranks of pipes and various percussion effects produced an organ of six manuals (hanging in lofts above an auditorium of 25,000 seats) controlled by a movable console of 884 stop-controls and accessories, and blown by pressures of 40 to 140 cm, the latter for the diaphones. The extension organ of 1938 in the Civic Hall, Wolverhampton, was more modest and typical (Table 34).
Electricity has been used to replace key-pallet action (see fig.11), operate stop-mechanisms and accessories (couplers, combinations, tremulant, Swell shutters etc.), drive a motor for raising the wind and replace older chest types. The design of such mechanisms requires great skill and was perfected only during the 20th century. Certain sophisticated gadgets like Willis’s ‘infinite speed and gradation Swell’ (where the amount by which the pedal is pushed forward is a measure of the speed at which the shutters open) date from the 1930s. In 1905 Audsley was still justifying the ‘incomplete’ nature of his discussion of electro-pneumatic actions by ‘the tentative state of that branch of organ construction at this time’. By then, however, knowledge of such actions was advanced enough for E.M. Skinner’s system to be applied at St Bartholomew, New York, to a console playing two organs, one at each end of the church. Skinner was perhaps America’s most innovatory designer of actions; his ‘pitman chest’ (see below), still widely used in the USA, was first developed during his employment with Hutchings in the 1890s and was a radical departure from other systems then in use which were, with the exception of Austin’s equally original ‘Universal Air Chest’, largely electrified adaptations of the older slider-, ventil-, or cone-chests.
Builders of the period 1840–1940 often disagreed with one another’s taste in details. Hope-Jones’s diaphones were not made (or were only briefly employed) by most builders, nor Cavaillé-Coll’s type of slotted reed pipes outside France, nor English leathered Diapasons beyond a certain period in England and the USA, nor the unit-chest by most of the better builders of church organs. The origin of many voicing techniques, such as leathering the lips of flue pipes and weighting reed-tongues with brass or lead, is obscure; so many had their origins in earlier periods that only the extremes of various kinds (high pressure, diaphone pipes, electro-pneumatic action etc.) can be dated from the late 19th century. It was these extremes that led to the Cinema organ about 1911. A large-looking Wurlitzer organ of this period contained only a few ranks of pipes voiced to either extreme and ‘extended’ to provide many stops available at every pitch on every manual: a reductio ad absurdum of the principle of ‘floating’ chests. With its percussion traps and effects and omnipresent tremulants, its high-pressure pipework enclosed in grille-fronted chambers, its movable console operating electric actions and swell shutters, the cinema organ can be seen not only following on from the ‘serious’ organs of Hope-Jones, Compton, Pendlebury, Franklin Lloyd and others, but as an updated version of Vogler’s orchestrion. Again it was not the church organ but the secular that demonstrated an idea taken to its logical end.
Organ, §VI: Some developments 1800–1930
The early decades of the 20th century saw more than one short-lived phenomenon. The heyday of the cinema organ lasted only until the introduction of soundtracks to moving pictures around 1930 (and a little later in Britain). Many such organs were ultimately removed from cinemas, some destroyed, and others moved to churches (where they were eventually found to be so inappropriate that they were replaced); but in the second half of the century some that survived in situ were restored, and, in America, others have been rebuilt and installed in ‘pizza and beer’ restaurants, where they continue their intended mission of providing entertainment. Another such development was the domestic self-playing organ (see Player organ), created by manufacturers such as Welte & Söhn of Freiburg and the Aeolian Company of New York, who each adapted their already successful electro-pneumatic roll-playing mechanisms for the Reproducing piano to the pipe organ. As seen from surviving player-roll libraries, the greater part of the repertory of these instruments consisted of orchestral and operatic transcriptions, and their tonal resources were geared to this music. However, legitimate organ music was also recorded, and some of these rolls now have considerable historical interest in that they preserve the performances of some notable turn-of-the-century organ virtuosos. The player organ enjoyed a worldwide market until a combination of the Depression and new fashions such as the radio and the gramophone set it into a near terminal decline in the 1930s.
(i) reacted negatively to a previous period. In the Orgelbewegung this was done in the form of a protest against the thick, loud sonorities of the orchestral organ, the factory organ, the ‘expressive’ or symphonic organ, the organ as an engineered machine rather than an apparatus or ‘tool of music’. As such, reacting against late 19th-century organ ideals is equivalent to reacting against late 19th-century music, and insufficient explanation has been given for why an organ of Sauer is less worthy of revival than, say, Wagner’s Parsifal.
(ii) assumed that criteria could be determined. In 1906 Schweitzer’s test for an organ, ‘the best and sole’ standard, was its fitness for playing J.S. Bach’s music. Unfortunately, that ideal in the 1820s had already deflected the French and English organs from the better features of their native paths; and it is not per se a reliable criterion, since not only do opinions differ as to the ‘nature of Bach’s organ’ but the composer himself played organs of quite opposing aims. To the reformers, the ‘Bach organ’ was more a generic term, merely signifying instruments built and voiced ‘in the Baroque manner’. Schweitzer’s rallying-cry was perhaps not to be taken too literally, although several builders in Alsace and south Germany met under its banner and adopted stop-lists (if nothing else) conducive to Bach registration. The resulting ‘Alsatian Organ Reform’ has been seen as the precursor of the Organ Revival.
(iii) attempted in general to lead to standardization. Schweitzer’s views expressed at the Vienna Congress of the IMS in 1909 and at the Third Organ Conference at Freiberg, Lower Saxony in 1927 aimed at a general return to old ideals. Although in 1909 it may have been reasonable to equate tonschön with alt, a blanket equation of the two leads to over-uniformity and a kind of lazy norm often to be heard as simple anonymity in the tone of hundreds of neo-Baroque organs built in Germany and elsewhere since the mid-1930s.
2. German developments in the 1920s.
4. Scandinavian and Dutch organs.
5. The Organ Revival in the USA.
7. Some German developments since World War II.
Organ, §VII: The Organ Revival 1930–70
Church
organs had that power based on sweetness which constitutes majesty. The change
came on, and for the sake of louder tone, pressure of wind was doubled and
trebled. The same pressure acting on the valves which let the wind into the
pipes made them too heavy for the fingers to move through the keys. A machine
was then invented which did the work at second hand [and] the music of the
organ dragged on after the player’s fingers as best it could. Personal touch,
which did so much for phrasing and expression, was destroyed.
Then fashion decreed that the organ should be an imitation of the orchestra. …
The organist, if he is clever, can give a chromo-lithograph of the Meistersinger
Prelude; but he has not the right tone with which to play a chorale, if his
organ is up-to-date. Modern compositions are intended for this machine, and all
is well with them; but it is a revelation to hear Handel’s or Bach’s music on a
well-preserved old organ.
There is nothing here about ‘the Baroque organ’, and the word was only later taken over from art historians to evoke an organ type more imaginary than real.
Organ, §VII: The Organ Revival 1930–70
TABLE 35 |
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|
|
|
|
|
Freiburg University, ‘Praetorius’ organ II |
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W. Walcker-Mayer, 1954–5 |
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||||
|
|
|
|
|
|
Oberwerk |
|
Rückpositiv |
|
|
|
|
Principal |
8 |
|
Principal |
4 |
|
Gedackt |
8 |
|
Quintadena |
8 |
|
Oktave |
4 |
|
Hohlflöte |
4 |
|
Gemshorn |
4 |
|
Nachthorn (wood) |
4 |
|
Gedackt (wood) |
4 |
|
Blockflöte |
2 |
|
Nasat |
22/3 |
|
Oktave |
2 |
|
Scharfquinta |
4 (?11/3) |
|
Quinta |
11/3 |
|
Superoktave |
2 |
|
Zimbel |
|
|
Mixtur III |
2 |
|
Schalmei |
8 |
|
|
|
|
|
|
Brustpositiv |
|
Pedal |
|
|
|
|
Krummhorn (wood) |
8 |
|
Untersatz (open wood) |
16 |
|
Quintetz |
11/3 (?4) |
|
Posaune (Sordun) |
16 |
|
Zimbel |
II |
|
Dolcan |
8 |
|
Sifflöte |
1 |
|
Bauerflötlein |
1 |
|
|
|
|
Singend Cornet |
2 |
Zimbelstern |
|
||||
Tremulants (Oberwerk, Rückpositiv) |
|
||||
Couplers: Rückpositiv to Oberwerk; Oberwerk to Pedal; |
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|
Rückpositiv to Pedal |
|
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|
|
|
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|
|
|
|
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|
Organ, §VII: The Organ Revival 1930–70
By 1971, however, certain builders were attempting closer historical accuracy in their restorations, as is shown in a second Austrian organ, that of the Hofkirche, Innsbruck (seeTable 8 and fig.34). Here the original wind-trunk was preserved, the wind pressure ascertained and voicing recovered; the original short C–a'' compass was restored (though the keys perhaps date from the 18th century); the original pitch level (a' = 445), case, chests etc. were restored; and the instrument was tuned in an unequal temperament. Were the modern bellows to be replaced by one more characteristic of the period, the organ would represent better the late 20th-century ideals of restoration.
Organ, §VII: The Organ Revival 1930–70
Simpler than the organ at St Mary, Göttingen, yet put in a very imposing contemporary case by builders alert to correct acoustical placing, was the quire organ of the extraordinary Grundtvig Church, Copenhagen (1940), built by Marcussen. In 1920 the head of this firm was Sybrand Zachariassen, who was joined a little later by P.G. Andersen; by the late 1930s the firm was producing almost nothing but mechanical-action organs and doing good formative work in restoration (Sorø Cathedral, 1942). The Grundtvig Churh organ was quite uneclectic ( Table 36).
In the same year (1940) a Rückpositiv was added by Frobenius to the early 16th-century Hauptwerk from St Petri, Malmö, now in Malmö Museum, showing that builders were aware of the practical convenience of Werkprinzip elements. By 1944 the new organ of Jaegersborg, near Copenhagen, had three uncompromising Werkprinzip manuals complete with a Trumpet en chamade, so placed for power rather than for imitations of Spanish tone. (This has remained true of Orgelbewegung reeds en chamade.) Important too were the smaller organs made by the new builders after the war, especially in view of the lacklustre quality of most small organs built in the pre-war period. Flentrop’s eight-stop organ at Schoondijke (1951) was in its way even more influential than his Werkprinzip organ at Doetinchem (1952), which soon became a model for the design of Hauptwerk + Rückpositiv + Pedal towers. (The stop-lists of both are given inTable 37.) Open-toe voicing, mechanical action and encased departments were by now standard among the younger builders, although the importance of wind supply was still not understood. Such instruments went far beyond the theories of the Orgelbewegung, and it is a mistake to regard them as mere 17th- or 18th-century pastiche – they were in fact a new genre. Frequently they serve as practical demonstration of intricate theory and knowledge. Frobenius and Ingerslev’s paper on end correction, for example (C1947), is the most important theoretical work by an organ builder in this field since Cavaillé-Coll.
Organ, §VII: The Organ Revival 1930–70
The main innovators of the early revival in USA were Walter Holtkamp of Cleveland and G.D. Harrison, an Englishman working for the Skinner Organ Co. In 1933 Holtkamp had been contracted to add a Rückpositiv to the large Romantic organ of the Cleveland Museum of Art, but the slider-chest had a multiple-valve system which was later abandoned in his work. Harrison’s influence on tonal design was more important than the structural reforms; he had applied low pressure to a fairly large organ contracted for at Groton School in 1935, but structurally and mechanically it was otherwise no different from other electro-pneumatic organs built by the firm. This organ, like the slightly smaller but more coherent instrument built a year earlier for the Church of the Advent in Boston, was one of the first attempts in the USA at a large, classically influenced eclectic instrument, although its voicing hardly follows classical principles and its general effect lacks articulation. More successful, and certainly more influential, was the small, unencased, two-manual organ built in 1937 as an experiment, and installed in the Germanic (now Busch-Reisinger) Museum at Harvard University, which was heard by a vast audience through the broadcasts and recordings of E. Power Biggs, an early champion of the Reform movement. These and other isolated instruments of the period testify to a growing interest in historic European principles among some American organists and builders, Cavaillé-Coll and Silbermann being especially admired. Such organs, for all their drawbacks of voicing, pitman chests and electric action, possessed greater clarity than had been heard from American organs for some decades, and they made their point musically. Partly because of Holtkamp’s efforts, many of these organs were free-standing rather than installed in the all-too-common chambers (fig.48), but the musical importance of casework was as yet unrealized, and only low wind pressures and gentle voicing curbed the tendency of ‘pipes-in-the-open’ to sound raw and unblending, especially in acoustically dry surroundings.
Soon after World War II the reform movement revived with renewed vigour. Academic and musicological writers leant heavily on 17th-century German literature and indeed tried to create a more rational (if sometimes contrived) language of organ terms (Bunjes, D(xv)1966). Organists and organ students, especially American, became much influenced by the various historic organs of France and Germany, although the relative inaccessibility of East German organs until the late 1980s, notably those of Silbermann, affected American-European organ design. European builders exported small but important organs to the USA (Rieger about 1952, Flentrop in 1954), and Beckerath consolidated the trend by building a 44-stop four-manual organ for Trinity Lutheran Church, Cleveland, in 1957. American firms were bound to be influenced by such instruments, and while Flentrop secured many prestigious American contracts (e.g. St Mark’s Cathedral, Seattle), and Beckerath went on to build several equally important organs in Canada (e.g. St Joseph’s Oratory, Montreal), other builders like Charles Fisk of Massachusetts and Casavant Frères of Quebec soon produced their own versions of the new styles. Casavant’s organ of 1963 in Acadia University, Wolfville, Nova Scotia (Table 38) is a typical small organ of the kind inspired by such builders as Beckerath, and Fisk’s organ in Mt Calvary Church, Baltimore, was influenced by Flentrop. From the point of view of the Organ Revival, such instruments were far in advance of the huge unencased organs made by the larger firms (e.g. Möller’s paired organs in the Shrine of the Immaculate Conception, Washington DC, 1970), although it is fair to point out that inventive and contemporary visual effects can often be achieved by a good designer with unencased chests.
Organ, §VII: The Organ Revival 1930–70
Although perceptive English organ enthusiasts such as Cecil Clutton were praising European ‘reform’ organs in print by around 1950, it seems to be true that the Organ Revival in England ‘really took root only with the opening of the organ for the Royal Festival Hall, London, in 1954’ (Clutton and Niland, D(xii)1963; fig.49). Despite careful planning by the adviser (Ralph Downes) and meticulous workmanship by the builders (Harrison & Harrison), the composite nature of the organ made it little more than a quickly dated compromise. Its 103 stops give the impression of immense adaptability, and the German flutes, Anglo-German chorus and French reeds allow many types of organ music to be given reasonable performance; but the very size (quite apart from the semi-unencased construction and the electro-pneumatic action) make true sympathy with most musical styles impossible. Although admired by many players in both England and the USA, the instrument has had curiously few successors: new designs did not immediately appear, despite an awareness of continental organs (e.g. the Organ Club’s visit to Frobenius in 1958) and the obvious qualities of tracker action (St Vedast-alias-Foster, London, built in 1961 by Noel Mander, using an 18th-century case and much antique pipework). J.W. Walker’s organ of 1959 in the Italian Church, London, showed a rather confused scheme, but it helped to open the path to ‘Baroque’ influences: ..\Frames/F922887.html
Organ, §VII: The Organ Revival 1930–70
An important factor in postwar Germany was the prominence and high standard of many new and small firms, while the older and larger ones faded into the background. The appointment of organ advisers for each of the districts of Germany encouraged smaller builders as it also encouraged local variety and enterprise. From the early 1950s Beckerath of Hamburg and the two Schuke firms of Berlin (East and West) produced organs of strong character, often influenced by old instruments they had rebuilt (Schnitger organs rebuilt by Beckerath, Joachim Wagner organs by Alexander Schuke); as noted above, Beckerath also exported instruments to the USA and, in 1970, a smaller example to Britain (Clare College, Cambridge). Ahrend and his former partner Brunzema (pupils of Paul Ott) continued the trend towards strong-toned organs, omitting most mutations and relying on highly coloured flue and reed stops (usually made of hammered metal); old instruments restored by the firm (e.g. at Westerhusen) have a natural, unforced but startlingly powerful, breathy tone. The organ at Westerhusen, like Metzler’s restoration at Nieuw Scheemda, Führer’s at Hohenkirchen and Ahrend’s in Stade, is a revelation of the musical colour open to a 17th-century organist of Friesland and Groningen, and these instruments have exercised an increasingly positive influence on the work of other north German builders as well as Americans such as John Brombaugh, Taylor & Boody and P.B. Fritts. The stop-lists seem nondescript; an example by Ahrend & Brunzema (Bremen-Oberneuland, 1966) is: ..\Frames/F922889.htmlBut the sound is far from nondescript, and the idiosyncratic tone of such instruments is well removed from the top-heavy neo-Baroque anonymity typical of so many organs of the 1950s.
c: organ pipes: scaling, voicing and tuning
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(v) Baltic States (Estonia, Lithuania, Latvia)
(x) Czechoslovakia/Czech Republic, Slovakia
(xii) England, Ireland, Scotland, Wales
(xxx) South and Central America (Argentina, Brazil, Chile, Guatemala, Peru, Uruguay, Venezuela)
HawkinsH
Hopkins-RimbaultO
WilliamsNH
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L. Souberbielle: Le plein-jeu de l’orgue français à l’époque classique (1660–1740), i (Montoire-sur-le-Loir, 1977) [incl. facs. of J. Sauveur: Application des sons harmoniques à la composition des jeux d’orgues, Paris, 1704]
J. Guillou: L’orgue: souvenir et avenir (Paris, 1978)
P. Salies and others, eds.: L’orgue de l’insigne Basilique Saint-Sernin de Toulouse (Toulouse, 1979)
P. Hardouin: ‘Les grandes orgues de la Basilique de St. Denis en France’, Connaissance de l’orgue (1979–80) [special issue]
C.-W. Lindow: Historic Organs in France (Delaware, OH, 1980) [Eng. trans. of orig. Fr. MS]
P.-Y. Asselin: ‘Le tempérament en France au XVIIIe siècle’, L’orgue à notre époque: Montreal 1981, 45–69
M. Cocheril: Les orgues de Bretagne (Rennes, 1981)
D. Fuller: ‘Zenith and Nadir: the Organ versus its Music in Late 18th-Century France’, L’orgue à notre époque: Montreal 1981, 129–48
G. Klein: ‘Le grand orgue de St. Sulpice’, Flûte harmonique, no.20 (1981) [whole issue]
Fédération francophone des amis de l’orgue: 1984– [series of annual congresses, each devoted to a region of France]
S. May: ‘St-Michel, Bordeaux Reconsidered’, Organ Yearbook, xv (1984), 13–20
R. Davy: Les grandes orgues de l’abbatiale St. Etienne de Caen (Schwarzach, 1985)
H. Steinhaus: ‘Orgues à Toulouse et dans la région’, ISO Information, no.25 (1985), 31–64
P. Meyer-Siat and others: Orgues en Alsace (Strasbourg, 1985–6)
C. Noisette de Crauzat: L’orgue français (Paris, 1986)
R. Saorgin, R. and X. Sant: Les orgues historiques du pays niçois (Briel-sur-Roya, 1986)
T.G. Spelle: ‘The Organ of Transition in France (1785–1835)’, American Organist, xxi/4 (1987), 68–70
J. Burg: ‘Charles-Marie Widor und Louis Vierne in ihrer Begegnung mit dem Orgelbau’, Acta organologica, xx (1988), 319–61
Orgues de l’Ile-de-France (Paris, 1988–99)
Orgues en Aquitaine (Aix-en-Provence, 1988–9)
F. Sabatier, ed.: Pour une histoire des orgues de France pendant la Révolution 1789–1802 (Paris, 1989)
Orgues de Normandie (Paris, 1990)
J. Fellot: L’orgue classique français (Aix-en-Provence, 1991)
P. van Dijk: Orgels in de Elzas: orgelcultuur tussen Frankrijk en Duitsland (Kampen, 1992)
M. Le Moël, ed.: Les orgues de Paris (Paris, 1992)
D. Roth and G. Lade: Die Cavaillé-Coll-Mutin-Orgel der Basilika Sacré-Coeur in Paris (Langen bei Bregenz, 1992) [rev. trans. of D. Roth: Le grand orgue du Sacré-Coeur de Montmartre à Paris, 1985]
J. Eschbach: ‘St. Sulpice Restored’, American Organist, xxviii/1 (1994), 56–60
N.R. Fairbank: ‘The Romantic Organ in France and its Influence on 19th-Century French Literature’, American Organist, xxviii/6 (1994), 75–7
P.-M. Guéritey: Le grand orgue de la cathédrale St.-Bénigne de Dijon, 1745–1995 (Dijon, 1995)
M. Cocheril and J. Ourvois: Orgues en Bretagne (Lyons, 1996)
G. Lade: Die Orgel der Kathedrale Notre-Dame in Paris (Lochau, 1997)
A. Werckmeister: Organum gruningense redivivum, oder Kurtze Beschreibung des in der grüningischen Schlos-Kirchen berühmten Orgel-Wercks (Quedlinburg and Aschersleben, 1705); ed. P. Smets (Mainz, 1932)
J.H. Biermann: Organographia hildesiensis specialis (Hildesheim, 1738); ed. E. Palandt (Kassel, 1930)
C.G. Meyer: Sammlung einiger Nachrichten von berühmten Orgel-Werken in Teutschland (Breslau, 1757)
J. Massmann: Die Orgelbauten des Grossherzogthums Mecklenburg-Schwerin, i: Die Orgelbauten der Residenzstatdt Schwerin (Wismar, 1875/R)
G. Bohnert: Die Ludwigsburger Orgelbauindustrie in hundertjähriger Entwicklung (diss., U. of Heidelberg, 1920)
L. Burgemeister: Der Orgelbau in Schlesien (Strasbourg, 1925, rev. 2/1973 by J. Hermann, D.G. Busch and R. Walter)
P. Smets, ed.: Orgeldispositionen (Kassel, 1931)
W. Haacke: Die Entwicklungsgeschichte des Orgelbaus im Lande Mecklenburg-Schwerin (Wolfenbüttel, 1935)
F. Blume: Michael Praetorius und Esaias Compenius: Orgeln Verdingnis (Wolfenbüttel, 1936)
G. Fock: ‘Hamburgs Anteil am Orgelbau im niederdeutschen Kulturgebeit’, Zeitschrift des Vereins für hamburgische Geschichte, xxviii (1939), 289–373
G. Frotscher: Deutsche Orgeldispositionen aus fünf Jahrhunderten (Wolfenbüttel, 1939)
I. Rücker: Die deutsche Orgel am Oberrhein um 1500 (Freiburg, 1940)
W. Supper and H. Meyer: Barockorgeln in Oberschwaben (Kassel, 1941)
Der Barock, seine Orgeln und seine Musik in Oberschwaben: Ochsenhausen 1951
W. David: Johann Sebastian Bachs Orgeln (Berlin, 1951)
U. Dähnert: Die Orgeln Gottfried Silbermanns in Mitteldeutschland (Leipzig, 1953/R)
P. Rubardt: Die Silbermannorgeln in Rötha (Leipzig, 1953)
T. Peine: Der Orgelbau in Frankfurt am Main und Umgebung von den Anfängen bis zur Gegenwart (Frankfurt, 1956)
W.L. Sumner: ‘The Organ of Bach’, HMYB, viii (1956), 14–135
W. Kaufmann: Die Orgeln des alten Herzogtums Oldenburg (Oldenburg, 1962)
K.M. Fruth: Die deutsche Orgelbewegung und ihre Einflüsse an die heutige Orgelklangwelt (Ludwigsburg, 1964)
W. Metzler: Romantischer Orgelbau in Deutschland (Ludwigsburg, 1965)
R. Reuter: Orgeln in Westfalen (Kassel, 1965)
K. Bormann: ‘Die gotische Orgel von Bartenstein’, Ars organi, xxix (1966), 989–1009
K. Bormann: Die gotische Orgel zu Halberstadt (Berlin, 1966)
P. Bunjes: The Praetorius Organ (St Louis, 1966)
F. Bösken: Quellen und Forschungen zur Orgelgeschichte des Mittelrheins, i: Mainz und Vororte (Mainz, 1967)
K.-L. Schuke: ‘Deutsche Orgellandschaft zwischen Elbe, Stralsund, und Görlitz’, Acta organologica, i (1967), 28–37
W. Kaufmann: Die Orgeln Ostfrieslands: Orgeltopographie (Aurich, 1968)
G. Vedder: Der Orgelbau in den Kreisen Iserlohn und Unna vor 1800 (Cologne, 1970)
W. Adelung: Orgeln der Gegenwart (Kassel, 1972)
E. Schäfer: Laudatio organi: eine Orgelfahrt (Leipzig, 1972, 7/1992)
U. Pape: Die Orgeln der Stadt Wolfenbüttel (Berlin, 1973)
O. Schumann: Orgelbau im Herzogtum Schleswig vor 1800 (Munich, 1973)
U. Pape: ‘Philipp Furtwängler (1800–1867)’, ISO Information, no.11 (1974), 777–98
G. Beer: Orgelbau Ibach Barmen ( 1794–1904) (Cologne, 1975)
W. Schlepphorst: Der Orgelbau im westlichen Niedersachsen (Kassel, 1975)
Frühromantischer Orgelbau in Niedersachsen: Hildesheim 1976
B. Billeter: ‘Albert Schweitzer und sein Orgelbauer’, Acta organologica, xi (1977), 173–225
H. Winter and C. Edskes: Orgelstudien, ii: Cappel (Hamburg, 1977); i: Stade (Hamburg, 1979)
G. Brenninger: Orgeln in Altbayern (Munich, 1978, 2/1982)
H.J. Busch: ‘Zwischen Tradition und Fortschritt: zu Orgelbau, Orgelspiel und Orgelkomposition in Deutschland im 19. Jahrhundert’, Mundus organorum: Festschrift Walter Supper, ed. A. Reichling (Berlin, 1978), 63–91
Die kleine Orgel in St. Jakobi zu Lübeck (Lübeck, 1978)
C.H. Edskes: ‘Der Orgelbau im Ems-Dollart-Gebiet in Gotik und Renaissance’, Ostfriesland, ii (1978), 29
U. Pape: Der Orgeln der Kreises Fulda ausser Kernstadt Fulda (Berlin, 1978)
U. Pape and others: Monographien historischer Orgeln, i: Geversdorf und Altenhagen (Berlin, 1978); iii: Hohenkirchen (Berlin, 1980); iv: Cadenberge (Berlin, 1984)
H.M. Balz and R. Menger: Alte Orgeln in Hessen-Nassau (Berlin, 1979)
U. Dähnert: ‘Geschichte der Schlosskirchen-Orgel in Altenburg’, Organ Yearbook, x (1979), 48–62
U. Dähnert: Historische Orgeln in Sachsen: ein Orgelinventar (Frankfurt, 1980)
J.S. Hettrick: ‘The German Organ of the Early Renaissance’, The Diapason, lxxi/11 (1980), 1, 6–8
G. Seggermann and W. Weidenbach: Denkmalorgeln zwischen Weser und Ems (Berlin, 1980)
B. Sulzmann: Historische Orgeln in Baden, 1690–1890 (Munich, 1980)
W. Hüttel: ‘Zwei Meisterwerke der sächsisch-thüringischen Orgelbaukunst im 18. Jahrhundert’, Acta organologica, xv (1981), 76–87
H. Vogel: Kleine Orgelkunde (Wilhelmshaven, 1981)
O.G. Blarr and T. Kersken: Orgelstadt Düsseldorf (Düsseldorf, 1982)
P. Golon: Historische Orgeln in Landkreis Stade (Stade, 1983)
W. Kalipp: Die westfälische Orgelbauerfamilie Vorenweg-Kersting ( 1784–1879) (Kassel, 1984)
G.K. Ommer: Neue Orgeln im Ruhrgebiet (Duisburg, 1984)
W. Renkewitz and J. Janca: Geschichte der Orgelbaukunst in Ost- und Westpreussen von 1333 bis 1944 (Würzburg, 1984–)
W. Walcker-Meyer and R. Raue: ‘German Organ Building in the Nineteenth Century’, JBIOS, viii (1984), 82–95
H.H. Wickel: Auswärtige Orgelbauer in Westfalen (Kassel, 1984)
H.D. Blanchard: The Bach Organ Book (Delaware, OH, 1985)
W. Haacke and R. Jaehn: ‘Paul Schmidt und Mecklenburgs Orgelbau im 18. Jahrhundert’, Acta organologica, xviii (1985), 44–265
S. Jeans: ‘August Wilhelm Bach und sein Lehrbuch für Orgel’, Orgel, Orgelmusik, und Orgelspiel: Festschrift Michael Schneider zum 75. Geburtstag (Kassel, 1985), 65–77
Orgellandschaft Rheinland: Steinfeld 1986
G. Brenninger: Orgeln in Schwaben (Munich, 1986)
H. Fischer: Die Orgeln des Landkreises Bad Kissingen (Bad Kissingen, 1986)
G.B. Stauffer and E. May, eds.: J.S. Bach as Organist: his Instruments, Music, and Performance Practices (London and Bloomington, IN, 1986)
H. Völkl, W. Rehfeldt and G. Rehm: Orgeln in Württemberg (Stuttgart, 1986)
S. Jeans: ‘The Organ Builders J.S. and C.A. Buchholz of Berlin’, Organists Review, lxxii (1987), 207–10
K.J. Snyder: ‘Buxtehude’s Organs’, American Organist, xxi/5 (1987), 75–80
F. Jakob: ‘Die Gabler-Orgel zu Weingarten’, Organ Yearbook, xix (1988), 67–79
W. Bergelt: Die Mark Brandenburg: eine wiederentdeckte Orgellandschaft (Berlin, 1989)
B.H. Bonkhoff: Denkmalorgeln in der Pfalz (Speyer, 1990)
B. Schwarz, ed.: 500 Jahre Orgeln in Berliner evangelischen Kirchen (Berlin, 1991)
L. Edwards: ‘The Thuringian Organ, 1702–1720’, Organ Yearbook, xxii (1991), 119–50
F. Friedrich: Orgeln in Altenburg (Altenburg, 1991)
K. Lueders: ‘German Organbuilding in Europe’, ISO Yearbook (1991), 126–47
H. Fischer and T. Wohnhaas: Die Augsburger Domorgeln (Sigmaringen, 1992)
K. Könner: Der süddeutsche Orgelprospekt des 18. Jahrhunderts (Tübingen, 1992)
H.J. Busch: ‘Die Orgeln Mendelssohns, Liszts und Brahms’, International Organ Academy: Göteborg 1994, 235–49
H. Fischer and T. Wohnhaas: Lexikon süddeutscher Orgelbauer (Wilhelmshaven, 1994)
F.-H. Gress: Die Orgeln der Frauenkirche zu Dresden (Freiburg, 1994)
F. Oehme: Handbuch über die Orgelwerke in der Kreishauptmannschaft Leipzig, 1905 (Berlin, 1994)
K. Döhring: Der Orgelbau in Kreis Warendorf (Warendorf, 1995)
F. Friedrich and D. Albrecht: Orgeln im Altenburger Land (Altenburg, 1995)
H. Haupt: Orgeln in Ost- und Südthüringen (Leipzig, 1995)
W. Manecke and J. Mayr: Historische Orgeln in Oberschwaben (Regensburg, 1995)
R. Nickles: Orgelinventar der Krummhörn und der Stadt Emden (Bremen, 1995)
H. Reinitzer, ed.: Die Arp Schnitger-Orgel der Hauptkirche St. Jacobi in Hamburg (Hamburg, 1995)
H. Reuter, ed.: Barocke Orgelkunst in Westfalen (Soest, 1995)
H. Vogel, R. Ruge and R. Noah: Orgellandschaft Ostfriesland (Norden, 1995, 2/1997)
D. Prost: Stralsunds Orgeln (Lauffen, 1996)
M.G. Kaufmann: Orgel und Nationalsozialismus: die Ideologische Vereinnahmung des Instrument im ‘Dritten Reich’ (Kleinblittersdorf, 1997)
G. Seggermann: Die Orgeln in Hamburg (Hamburg, 1997)
H. Vogel, G. Lade and N. Borger-Keweloh: Orgeln in Niedersachsen (Bremen, 1997)
K.-H. Göttert and E. Isenberg: Orgelführer Deutschland (Kassel, 1998)
K.-H. Göttert and E. Isenberg: Orgeln in Köln: ein Rundgang zu 70 Instrumenten (Köln, 1998)
U. Pape and W. Topp: Orgeln und Orgelbauer in Bremen (Berlin, 1998)
L. Zolnay: ‘Ungarische Orgelbauer und Organisten im 14.–16. Jahrhundert’, SMH, xiv (1972), 385–400
K. Szigeti: Régi magyar orgonák: Köszeg [An old Hungarian organ: Köszeg] (Budapest, 1974)
E.L. Szonntagh: ‘Is the Pipe Organ Discovered at Aquincum a Water Organ?’ Scientific Honeyweller, ii/4 (1981), 54–60
K. Szigeti: ‘Az orgonaépités története Magyarországon Budavár elestéig, 1541-ig’, [The history of organ building in Hungary up to the fall of the Castle of Buda in 1541], Magyar zenetörténeti tanulmányok Zoltán Kodály, ed. F. Bónis (Budapest, 1977), 263–86
K. Szigeti: ‘Das Wirken österreichischer Orgelbauer in Ungarn’, Organa austriaca, iii (1982), 133–58
I. David: Műemlék organák Erdélyben [Listed organs in Transylvania] (Budapest, 1996)
F. Metz: ‘Orgelbau im Banat’, Ars organi, xlv/3 (1997), 150–72
‘Jerusalem is Blest with Organ Music’, The Diapason, xxv/11 (1933–4), 9–10
L. Jacobs, W. Oberlinger and P.M. Scholl: Die neue Oberlinger-Orgel in der Basilika der Dormition-Abbey in Jerusalem (Windesheim, 1982)
B.L. Leach: ‘Organs of Israel’, American Organist, xxv/4 (1991), 62–4
A. Angelucci: Notizie sugli organi italiani (Turin, 1865)
A. Bonuzzi: Saggio di una storia dell’arte organaria in Italia nei tempi moderni (Milan, 1889/R)
D. di Pasquale: L’organo in Sicilia dal sec. XIII al sec. XX (Palermo, 1929/R)
R. Lunelli: Organari stranieri in Italia (Rome, 1938)
W. Shewring: ‘Notes on the Organ in Italy’, The Organ, xxx (1950–51), 42–51, 124–38
L. Salamina: Organina tradizionale italiana (Lodi, 1952)
C. Moretti: L’organo italiano (Milan, 1955, 2/1973)
W. Shewring: ‘Organs in Italy: Brescia and Verona’, The Organ, xxxv (1955–6), 161–70
R. Lunelli: Der Orgelbau in Italien in seinen Meisterwerken vom 14. Jahrhundert bis zur Gegenwart (Mainz, 1956)
R. Lunelli: Die Orgelwerke von S. Petronio zu Bologna (Mainz, 1956)
R. Lunelli: L’arte organaria del Rinascimento in Roma e gli organi di S. Pietro in Vaticano, dalle origini a tutto il periodo fresco baldiano (Florence, 1958)
C. Triani: Organari bergamaschi (Bergamo, 1958)
L.F. Tagliavini: ‘Mezzo secolo di storia organaria’, L’organo, i (1960), 70
S. dalla Libera: L’arte degli organi a Venezia (Venice, 1962)
L.F. Tagliavini: ‘Nuove vie dell’arte organaria italiana’, L’organo, iii/3 (1962), 77–113
S. dalla Libera: L’arte degli organi nel Veneto: la diocesi di Céneda (Venice, 1966)
E. Girardi: Gli organi della città di Verona (Alba, 1968)
O. Mischiati: L’organo della chiesa del Carmine di Lugo di Romagna (Bologna, 1968)
F. de Angelis: Organi e organisti de S. Maria in Aracoeli (Rome, 1969)
G. Radole: L’arte organaria in Istria (Bologna, 1969)
G. Radole: L’arte organaria a Trieste (Bologna, 1975)
U. Pineschi: ‘L’organo della pieve di Lizzano Pistoiese’, L’organo, xv (1977), 3–39
E. Selfridge-Field: ‘Gabrieli and the Organ’, Organ Yearbook, viii (1977), 2–19
O. Mischiati: L’organo di Santa Maria di Campagna a Piacenza (Piacenza, 1980)
S. Romano: L’arte organaria a Napoli dalla origini al secolo XIX (Naples, 1980)
M. Bruschi and P.P. Donati: L’organo della chiesa di Treppio (Pistoia, 1981)
O. Mischiati: L’organo della cattedrale di Feltre (Bologna, 1981)
F. Baggiani: Gli organi nella cattedrale di Pistoia (Pisa, 1984)
O. Mischiati: L’organo Serassi della chiesa di S. Liborio a Colorno e il suo restauro (Parma, 1985)
M. Manzin: La tradizione organaria nel territorio varesino (Gavirate, 1987)
P. van Dijk: Historische orgels in Noord-Italie (Hilversum, 1988)
K. Sadko: Gli organi storici della provincia di Pistoia (Pisa, 1988)
G.D. Zaccaria: Organi e organari in Sicilia dal ’400 al ’900 (Palermo, 1988)
F. Baggiani, A. Picchi and M. Tarrini: La riforma dell’organo italiano (Pisa, 1990)
C. Loizzo: Organi e organari in Calabria (dal XVII al XX secolo) (Cosenza, 1990)
C. Giovannini: Antichi organi italiani: la provincia di Modena (Modena, 1991)
M. Bernard: ‘Zwischen Tradition und Modernismus: die norditalienische Orgel zur Zeit der Wende vom 18. zum 19. Jahrhundert’, Acta organologica, xxiii (1992), 9–48
E. Martinelli: Gli antichi organi di terra d’Otranto (Lecce, 1992)
G. Giacomelli and E. Settesoldi: Gli organi di S. Maria del Fiore di Firenze (Florence, 1993)
O. Mischiati and S. Beretta: Organi antichi del sottoceneri (Lugano, 1993)
M. Tarrini: La fabbrica d’organi di William George Trice a Genova (1881–1897) (Savona, 1993)
G. Battistelli and others: Organi e cantorie nelle chiese di Roma (Rome, 1994)
R. Giorgetti: Antichi organi del Chianti (Chianti, 1994)
M. Cantini and R. Giorgetti: Antichi organi del Mugello (Florence, 1995)
A. Cesana: Gli organi in Valsassina (Barzio, 1995)
M. Manzin: Arte organaria nella cattedrale di Cremona (Cremona, 1995)
P. Peretti and M. Canti: Organi storici delle Marche: gli strumenti restaurati, 1974–1992 (Fiesole, 1995)
B. Owen: ‘The Organ in Japan’, The Diapason, lxviii/9 (1976–7), 1, 12–14
L.F. Tagliavini: ‘L’organo in Giappone’, L’organo, xv (1977), 127–33
J. Kaneko: ‘The Dawn of Japanese Organ History 1868–1947’, Organ-kenkyu, viii (1980), 61–74
Organs in Japan, i–ii (Tokyo, 1985–92); iii (forthcoming) [pubn of Japan Association of Organists]
H. Tsuji: ‘Italian Style Organs in Japan’, Informazione organistica, i/1 (1989), 17–22
R. Akai: ‘Aspects of the Organ History in Meiji Era’, Organ-kenkyu, xviii (1990), 1–17
D.A. Skerman: ‘Three Pipe Organs in Hiroshima’, Organ Club Journal (1992), no.5, pp.88–90
D.W. Hinshaw: ‘Four Centuries of Mexican Organs’, Music, iii (1969)
J.T. Fesperman: ‘Two Important Mexican Organs’, The Organ, xlix (1969–70), 179–83
J.E. Blanton: ‘The Valenciana Organ’, Art of the Organ, ii/4 (1972), 31–50
J.T. Fesperman and D.W. Hinshaw: ‘New Light on America’s Oldest Organs’, Organ Yearbook, iii (1972), 52–63
J. Velazco: ‘Organos barrocos mexicanos’, Anales del Instituto de investigaciones estéticas, no.44 (1975), 83–102
J. Fesperman: Organs in Mexico (Raleigh, NC, 1980)
D.A. Flentrop: ‘De orgels in de kathedraal van Mexico-City’, Visitatio organorum: feestbundel voor Maarten Albert Vente, ed. A. Dunning (Buren, 1980), 189–245; Eng. trans. pubd separately (Washington DC, 1986)
M. Drewes: ‘The Organs of the Cathedral of Mexico City’, Organ Yearbook, xiii (1982), 123–30
E. Castro Morales, ed.: Música y angeles: los organos de la Catedral de Mexico (Mexico City, 1983)
M. Drewes: ‘Further Notes on Mexican Organs of the 18th and 19th Centuries’, Organ Yearbook, xiv (1983), 23–43
S. Tattershall: ‘Organ Restoration in Mexico’, The Diapason, lxxiv/1 (1983), 8–9
J. Fesperman: ‘The Mexican Legacy of Organs’, MT, cxxv (1984), 107–9
S. Tattershall: ‘The Organs of Mexico City Cathedral’, The Tracker, xxi/1 (1987), 4–10
M. Drewes: ‘The Positive at San Jerónimo’, Organ Yearbook, xix (1988), 31–7
Voces del arte: inventario de organos tubulares (Mexico City, 1989)
M.T. Suárez: La caja de órgano en Nueva España durante el Barroco (Mexico City, 1991)
G. Bovet: ‘Les orgues au Mexique’, Tribune de l’orgue, xlv (1993), no.2, pp.18–23; no.3, pp.20–24; no.4, pp.5–11; xlvi (1994), no.2, pp.3–12; no.3, pp.3–11; no.4, pp.9–17; xlvii (1995), no.1, pp.10–17; no.2, pp.12–19; no.3, pp.3–10; no.4, pp.19–23
J. Gastellou and G. Mauléon: Catalogo de organos tubulares historicos del Estado de Puebla (Puebla, 1997)
Beschryving van het groot en uttmuntend orgel, in de St. Jans Kerk te Gouda (Gouda, 1764/R)
J. Hess: Dispositien der merkwaardigste kerk-orgelen, welken in de zeven Verëenigde provincien als mede in Duytsland en elders aangetroffen worden (Gouda, 1774/R)
J. Radeker: Korte beschryving van het beroemde en prachtige orgel in de groote of St. Bavoos-kerk te Haerlem (Haarlem, 1775/R)
N.A. Knock: Dispositien der merckwaardigste kerk-orgelen, welken in de provincie Friesland, Groningen en elders aangetroffen worden (Groningen, 1788/R)
J. Hess: Dispositien van kerk-orgelen, welken in Nederland worden aangetroffen (MS, c1815); ed. J.W. Enschedé (Amsterdam, 1906)
M.H. van ’t Kruijs: Verzameling van disposities der verschillende orgels in Nederland (Rotterdam, 1885/R)
F. van der Mueren: Het orgel in de Nederlanden (Brussels and Amsterdam, 1931)
H. Schouten: Onze oude orgels (Baarn, 1939)
M.A. Vente: Bouwstoffen tot de geschiedenis van het Nederlandse orgel in de 16de eeuw (Amsterdam, 1942)
A. Bouman: Orgels in Nederland (Amsterdam, 1944, 3/1956)
H. Schouten: Nederlandsche orgels en organisten (The Hague, 1944)
B. Bijtelaar: Het orgel van de Oude Kerk te Amsterdam (Amsterdam, 1953/R)
M.A. Vente: Proeve van een repertorium van de archivalia betrekking hebbende op het Nederlandse orgel en zijn makers tot omstreeks 1630 (Brussels, 1956)
M.A. Vente: Die Brabanter Orgel: zur Geschichte der Orgelkunst in Belgien und Holland im Zeitalter der Gotik und der Renaissance (Amsterdam, 1958, enlarged 2/1963)
P.H. Kriek and H.S.J. Zandt: Organum novum: orgelbeweging in Nederland sedert 1945 (Sneek, 1964, rev. 1981 by P.H. Kriek as Organum novum redivivum)
M. Seijbel: Orgels in Overijssel (Sneek, 1965)
M. Hoving: Het orgel in Nederland (Amsterdam, 1966)
G. Quaedvlieg: Maastricht orgelstad (Maastricht, 1968)
J. Jongepier: Frieslands orgelpracht (Sneek, 1970)
F. Peeters and M.A. Vente: De orgelkunst in de Nederlanden van de 16de tot de 18de eeuw (Antwerp, 1971; Eng. trans., 1971)
M.A. Vente: Vijf eeuwen Zwolse orgels 1447–1971 (Amsterdam, 1971)
J.H. Kluiver: Historische orgels in Zeeland (Sneek, 1972–6)
M. Seijbel: Zes eeuwen Veluwse orgels (Zaltbommel, 1975)
M.A. Vente: Orgels en organisten van de Dom te Utrecht van de 14e eeuw tot heden (Utrecht, 1975)
A.C.M. Luteijn: De orgelpijp uit (Baarn, 1976)
A.J. Gierveld: Het Nederlandse huisorgel in de 17de en 18de eeuw (Utrecht, 1977) [summaries in Eng., Ger.]
J. Jongepier and others: Langs Nederlandse orgels (Baarn, 1977–9)
G. Verloop: Small Organs in Holland (Schagen, 1978)
K. Bolt: De historie en samenstelling van het Haarlemse Müller-Orgel (Amsterdam, 1979/R)
T. Brouwer: Sleutelstad – orgelstad (Zutphen, 1979)
L. van Dijck: ‘’s-Hertogenbosch, orgelstad in de 16e eeuw’, Visitatio organorum: feestbundel voor Maarten Albert Vente, ed. A. Dunning (Buren, 1980), 117–29
J.W.P. Peeters and others: 250 jaars orgelmakers Vermeulen (1730–1980) (Weert, 1980)
B. Wisgerhof: Orgeln in den Niederlanden (Kassel, 1981, 2/1992)
A.J. Gierveld: 250 jaar Hinsz-orgel te Leens (1733–1983) (n.p., n.d.)
A.J. Gierveld: Antieke nederlandse huisorgels uit het bezit van Dirk Andries Flentrop/The Flentrop Collection of Antique Dutch Chamber Organs (Raleigh, NC, 1983)
M. Seijbel: Orgels rond het IJsselmeer (Houten, 1984)
J. Jongepier: Het van Hagerbeer/Schnitger-orgel in de Grote- of St. Laurenskerk te Alkmaar (Alkmaar, 1987)
H. van Nieuwkoop: Haarlemse orgelkunst van 1400 tot heden (Utrecht, 1988)
M.A. Vente: Utrechtse orgelhistorische verkenningen (Utrecht, 1989)
J. Jongepier and K. Walton: ‘The Restoration of Historic Organs in the Netherlands’, JBIOS, xv (1991), 80–89
P. van Dijk: Orgels in de stad Utrecht (Utrecht, 1992)
J. Jongepier: Orgelbouwers in Friesland (Leeuwarden, 1992)
J. Brouwer and others: Het Groninger orgelbezit van Adorp tot Zijldijk (Groningen, 1994–8)
J. van Biezen: Het Nederlandse orgel in de Renaissance en de Barok (Utrecht, 1995)
W.D. van der Kleij and W.H. Zwart: Orgels en organisten in Kampen (Kampen, 1995)
S. Tuinstra: ‘Groningen, Province of Organs’, Organ Yearbook, xxv (1995), 49–100
J. Jongepier, H. Nieuwkoop and W. Poot: Orgels in Noord-Holland (Schorl, 1996)
J. de Bloeme: De geschiedenis van de Waalse Kerk en haar orgels (Alphen aan den Rijn, 1997)
A.J. Gierveld and W.R.C. Adriaansz: Het Garrels-orgel in de Oude-Katholieke Kerk in Den Haag (The Hague, 1997)
Het historische orgel in Nederland (Amsterdam, 1997–)
H. Donga and P. van Dijk: Monumentale orgels van Luthers Amsterdam (Zoetermeer, 1998)
C. van Gestel: Luisterrijk: Nederlandse kerkorgels in beeld (Alphen aan den Rijn, 1998)
W.J. Cevaal, ed.: Een Hollands stadsorgel uit de Gouden Eeuw: het Van Hagerbeer-orgel in de Pieterskerk te Leiden (Zutphen, 1999)
A. Mainwaring: ‘Some Organs in New Zealand’, MO, xxi (1897–8), 609 only, 750–51; xxii (1898–9), 111–12
J.E. Stiller: ‘Summary Report of Pipe Organs Documented in New Zealand, September 1981 – March 1982’, OHTA News, vii (1983), no.2, pp.3–14; no.3; pp.10–20; no.4, pp.10–21; viii (1984), no.1, pp.26–32
B. Matthews: ‘Organs in Far Away Places’, The Organ, lxiv (1985), 82–7
M. Cox: ‘A Heritage in Perspective: a Study of New Zealand’s Historic Pipe Organs’, JBIOS, x (1986), 88
R.G. Newton: Organa cantuariensia: Organs in Canterbury, New Zealand, 1850–1885 (Christchurch, 1992)
Gazetteer of New Zealand Pipe Organs (Christchurch, 1996–7)
J. Sjögren: Orgelverken i Västerås stift: en historisk översikt 1952 (Stockholm, 1952)
T. Gamble: ‘The Organs of Arendal, Norway’, The Organ, lxiv (1985), 28–37
S.J. Kolnes: Norsk orgelkultur (Oslo, 1987)
S.J. Kolnes: Norsk orgelregister, 1328–1992 (Førdesfjorden, 1993)
P.A. Kjeldsberg, ed.: Barokkorgelet i Nidarosdomen/Die Barockorgel im Dom zu Trondheim (Trondheim, 1995)
R. Morgan: ‘The Organ in Norway’, American Organist, xxix/12 (1995), 59–61
G. Seggermann: ‘Hollenbach-Orgeln in Norwegen’, Ars organi, xlv/1 (1997), 20–25
H.G. Klais and H. Steinhaus: The Bamboo Organ in the Catholic Parish Church of St. Joseph at Las Piñas (Delaware, OH, 1977)
H.G. Klais: ‘Philippinische Orgeln aus dem 18. und 19. Jahrhundert’, Acta organologica, xiii (1979), 75–123
L. Burgemeister: Der Orgelbau in Schlesien (Strasbourg, 1925)
M. Odyniec: Organy oliwskie (Gdańsk, 1958)
T. Gablenz: ‘Organ Building in Poland’, The Diapason, liii (1961–2), no.6, pp.8–9, 28–9; no.7, pp.36–7
J. Golos: ‘Note di storia organaria polacca’, L’organo, v (1964–7), 31–62
J. Golos and E. Smulikowska: Polske organy i muzyka organowa (Warsaw, 1972; Eng. trans., 1993, as The Polish Organ)
J. Golos: ‘Portable Organs in Poland’, Organ Yearbook, iii (1972), 36–40
M.-L. Jaquet: ‘Quelques aperçus de la vie organistique en Pologne’, L’orgue, no.156 (1975), 97–100
J. Golos: ‘An Historical Survey of Organ-Building in Poland until 1900’, The Diapason, lxvii/5 (1975–6), 1, 3–5
J. Golos: ‘Some Rare Technical Features Found in the Historical Organs of Poland’, Organ Yearbook, x (1979), 34–47
R. Perucki: ‘The Organs of the Church of the Virgin Mary, Gdańsk, Poland’, The Diapason, lxxviii/8 (1987), 12–15
H.H. Eggebrecht, ed.: Die Orgel in Ostdeutschland und in Polen (Kleinblittersdorf, 1993)
E. Smulikowska: Organ-Cases in Poland as Works of Art (Warsaw, 1993)
W.J. Wyrembelski: ‘A Survey of Organ Building and Organ Music in Poland’, Reflections 1947–1997 (Ann Arbor, 1997), 79–96
M.A. Vente and W. Kok: ‘Organs in Spain and Portugal’, The Organ, xxxiv (1954–5), 193–9; xxxv (1955–6), 57–65, 136–42; xxxvi (1956–7), 155–64, 203; xxxvii (1957–8), 37–43
C. de Azevedo: Baroque Organ-Cases of Portugal (Amsterdam, 1972)
L.A.E. Pereira: ‘A organaria portuguesa no secolo XVIII’, Bracara Augusta, xxviii (1974), 492–504
G. Doderer: Orgelmusik und Orgelbau im Portugal des 17. Jahrhunderts (Tutzing, 1978)
L.A. Esteves Pereira: ‘Two More Arp Schnitgers in Portugal?’, Organ Yearbook, xiv (1983), 17–22
W.D. Jordan: ‘The Renaissance Organ of Evora Cathedral: New Facts concerning its Origin and Construction’, Organ Yearbook, xiv (1983), 5–16
M. Valença: O órgão do Bom Jesus, Braga (Braga, 1985)
W.D. Jordan: ‘The Organ in Portugal’, The Organ, lxv (1986), 163–85
M. Valença: O órgão na história e na arte (Braga, 1987)
M. Valença: A arte organística em Portugal (c. 1326–1750) (Braga, 1990)
K. Szigeti: Régi magyar orgonák: Szeged (Budapest, 1982)
J.-M. Cicchero: ‘Organs and Organbuilders in Transylvania, Rumenia’, ISO News, no.5 (1993), 28–32
U. Pape: Die Buchholz-Orgel in der Stadtkirche zu Kronstadt (Berlin, 1998)
B. Matthews: ‘A History of the Organ in Russia’, The Organ, lii (1972–3), 76–81; liii (1973–4), 11–18
L. Royzman: Organ v istorii russkoy muzïkal'noy kul'turï [The organ in the history of Russian musical culture] (Moscow, 1979)
H.H. Eggebrecht, ed.: Orgelbau und Orgelmusik in Russland (Kleinblittersdorf, 1991)
A. Fiseiskyi: ‘Die Geschichte der Orgel in Russland und der Sowjetunion’, Österreichisches Orgelforum (1992), no.1, pp.295–300
M. Velimirović: ‘The First Organ Builder in Russia’, Literary and Musical Notes: a Festschrift for Wm.A. Little, ed. G.C. Orth (Berne, 1995)
W. Lindner: Neuzeitliche Orgeln in Russland und der GuS (Lilienthal, 1996)
J. Sotov: ‘Russischer Orgelbau kurz vor der Jahrtausendwende’, Ars organi, xliv/4 (1996), 204–11
P. Kravchun and V. Shlyapnikov: Organs of St. Petersburg and the Leningrad Region (Moscow, 1998)
S. Roberts: ‘An American Organist in Russia’, American Organist, xxxiii (1999), no.2, pp.55–8; no.6, pp.62–5
M. Bizjak and E. Skulj: Orgle na Slovenskem (Ljubljana, 1985; Eng. and Ger. trans., 1985)
E. Skulj: Orgle v Ljubljani (Celje, 1994)
R. Stevenson: ‘Cathedral Organs in the Capitals of Argentina, Brazil, and Chile’, The Organ, xli (1961–2), 48–52
M. Castillo Didier and G. Bourligueux: L’orgue au Chili (Paris, 1978)
M. Castillo Didier: Caracas y el instrumento rey (Caracas, 1979)
J. Welch: ‘The Organ in Brazil’, American Organist, xviii/12 (1984), 54–9
A. Bonet Correa: ‘Tres cajas de órganos en Guatemala’, Estudios del Reino de Guatemala: homenaje al profesor S.D. Markman, ed. D. Kinkead (Seville, 1985), 195–201
G. Bovet: ‘Tampering with Historical Instruments: Three Brazilian Examples’, American Organist, xxii/3 (1988), 59 only
S.S. Budelli and M. Tarrini: ‘Un organo italiano a Canelones, Uruguay’, Informazione organistica, i/1 (1989), 7–9; ii/1 (1990), 16–18
M. Castillo Didier: 100 anos del organo Cavaillé-Coll: parroquia de San José (Caracas, 1989)
E.G. Rimoldi and C.A. Lalli Aliaga: ‘Il Serassi della chiesa di Montserrat di Buenos Aires, Argentina’, Informazione organistica, i/1 (1989), 4–6
H. van Gemert: Organos históricos del Perú/Historic Organs of Peru (Hillbrow, South Africa, c1990)
U. Pineschi: ‘Fasti e nefasti di un monumento’, Informazione organistica, ii/3 (1990), 15–20
E.G. Rimoldi and C.A. Lalli Aliaga: ‘Un organo Locatelli a Mar del Plata, Argentina’, Informazione organistica, ii/2 (1990), 11–14
J.M. Brown: The Organ in Brazil: a Cultural and Musical Perpsective (diss., Northwestern U., 1993)
M.P. Juárez: Censo y estudio de los órganos de la República Argentina (Buenos Aires, 1996)
A. Merklin: Aus Spaniens altem Orgelbau (Mainz, 1939)
F. Baldelló: ‘Organos y organeros en Barcelona (siglos XIII–XIX)’, AnM, i (1946), 195–237
J.M. Madurell: ‘Documentos para la historia del órgano en España’, AnM, ii (1947), 203–16
D. Shanks: The Evolution of the Organ … in the Major Cathedrals and Collegiate Churches of Spain from the 15th Century to the Present (diss., U. of Oxford, 1958)
R. Reuter: Organos españoles (Madrid, 1963)
R.G. de Amezua y Noriega: Perspectivas para la historia del órgano español (Madrid, 1970)
J. Wyly: ‘17th Century Spanish Trumpets by the Echevarrías’, Art of the Organ, ii/4 (1972), 7–25
J. Wyly: ‘Historical Notes on Spanish Façade Trumpets’, Organ Yearbook, viii (1977), 41–55
G.A.C. de Graaf: ‘The Gothic Organ in the Chapel of St. Bartholomew in Salamanca’, ISO Information, no.22 (1982), 9
A. Howell: ‘Organos, organeros, and organistas of Spain during the Scarlatti Years’, American Organist, xix/10 (1985), 91–7
R. Reuter: Orgeln in Spanien (Kassel, 1986)
J.-M. García Llovera: De organo vetere hispanico (St Ottilien, 1987)
L. Jambou, ed.: Compendio de el arte de organaría (Madrid, 1987)
L. Jambou: Evolución del órgano español: siglos XVI–XVIII (Oviedo, 1988)
Els orgues de Catalunya (Barcelona, 1990)
A. Marco Martinez: El órgano histórico en la provincia de Guadalajara (Guadalajara, 1990)
J.G. Lopez and A. Orleans, eds.: Organos históricos restaurados, Monasterio de Veruela, 21 May – 25 Aug 1991 (Zaragoza, 1991) [exhibition catalogue]
G. Albarracin: Los órganos de la Catedral de Almería: 500 años de historia (Almería, 1992)
J.E. Ayarra Jarne: History of the Organ in Seville Cathedral, City and Province (Omaha, NE, 1992)
M. Salaberria Salaberria: Bizkaiko organuak/Organos de Bizkaia (Bizkaia, 1992)
A. Cea Galan and I. Chia Trigos: Organos en la provincia de Cádiz (Granada, 1995)
J.A. de la Lama: El órgano barrocco español (Valladolid, 1995)
E. Landart: Les orgues Cavaillé-Coll en Gipuzkoa et leur répertoire (Paris, 1995)
J. Ruiz Jiménez: Organería en la diócesis de Granada (1492–1625) (Granada, 1995)
S. Platt: ‘Contemporary Organ Design in Spain’, JBIOS, xx (1996), 126–41
J.M. Azkue, E. Elizondo and J.M. Zapirain: Gipuzkoako organoak/Organos de Gipuzkoa (San Sebastián, 1998)
C.F. Hennerberg: Die swedischen Orgeln des Mittelalters (Vienna, 1909)
A. Freeman: ‘Swedish Organs and Organ Builders, 1200–1861’, The Organ, x (1930–31), 20–26
B. Wester: Gotisk resning i svenska orglar (Stockholm, 1936)
B. Wester: Stora Kopparbergs kyrkas orgel (Stockholm, 1942)
B. Khylberg: ‘Orgelbyggarefamiljen Cahman, Hülphers, och orgeln i Trefaldighetskyrkan i Kristianstad’, STMf, xxvii (1945), 61–75
B. Wester: ‘Orgeln i Leufsta Bruks Kyrka’, Orgel, ii/1–2 (1963), 5–26
E. Erici: Inventarium över bevarade äldre kyrkorglar i Sverige (Stockholm, 1965)
E. Krauss: ‘Alte Orgeln in Schweden’, Musik und Gottesdienst, xxv/1 (1971), 6–13
S.L. Carlsson: Sveriges kyrkorglar (Lund, 1973)
M. Kjersgaard and N.F. Beerstahl: Bjurumsorgeln (Skara, 1973)
D. Edholm: Orgelbyggare i Sverige 1600–1900 och deras verk (Stockholm, 1985)
M. Kjersgaard: ‘Technical Aspects of Swedish Organ-Building during the Middle Ages’, ISO Information, no.27 (1987), 5–118; no.29 (1988), 29–30
D.W. Edholm: Stockholm orgelstaden: historia och nutid (Stockholm, 1997)
I.L. Hultkvist: ‘The Organ in Malmö Museum’, American Organist, xxxii/2 (1998), 79–84
A. Jacques: Les orgues d’Yverdon (Yverdon, 1923)
J. Handschin: ‘Die Orgelbewegung in der Schweiz’, Tagung für deutsche Orgelkunst III: Freiberg, Lower Saxony, 1927, 166–21
W. Hardmeyer: Einführung in die schweizerische Orgelbaukunst (Zürich, 1947, 3/1975 as Orgelbaukunst in der Schweiz)
F. Munger: Schweizer Orgeln von der Gotik bis zur Gegenwart (Berne, 1961)
F. Jakob: Der Orgelbau im Kanton Zürich von seinen Anfängen bis zur Mitte des 19. Jahrhunderts (Berne, 1969–71)
Die Orgeln in der Klosterkirche Muri (Muri, 1970)
F. Jakob: ‘Introduction to Swiss Organ-Building’, ISO Information, no.7 (1971), 463–70
H. Gugger, D. Hegg and H. Schmocker: Die bernischen Orgeln: die Wiedereinführung der Orgel in den reformierten Kirchen des Kantons Bern bis 1900 (Berne, 1977–8)
F. Jakob: ‘Der Hausorgel in der Schweiz’, Visitatio organorum: feestbundel voor Maarten Albert Vente, ed. A. Dunning (Buren, 1980), 368–78
C. Schweizer: Orgeln in der Region Nidwalden und Engelberg vom 13. Jahrhundert bis zur Gegenwart (Lucerne, 1983)
R. Walter: Die Orgeln des Doms zu Arlesheim (Arlesheim, 1983)
A. Lanini: Gli organi della Svizzera italiana (Lugano, 1986–9)
F. Jakob: Die Orgel der Pfarrkirche St. Valentin und Dionysius zu Kiedrich im Rheingau (Mannedorf, 1989)
F. Jakob and others: Die Valeria Orgel: ein gotisches Werk in der Burgkirche zu Sitten/Sion (Zürich, 1991)
J. Grünenfelder: Die Orgeln im Kanton Zug (Zug, 1994)
F. Jakob and W. Lippuner: Orgellandschaft Graubünden (Chur, 1994)
S. Mayes: An Organ for the Sultan (London, 1956)
G. Gandolfo: ‘Un organo italiano a Istanbul’, Informazione organistica, viii/1 (1996), 16–17
‘Organ-Building in New-England’, New-England Magazine, vi (1834), 205–15
The Great Organ in the Boston Music Hall (Boston, 1865)
H.K. Oliver: ‘An Account of the First Organs in America’, Organist’s Quarterly Journal and Review, ii/1 (1875), 4
G.W. Nichols, ed.: The Cincinnati Organ (Cincinnati, 1878)
S.H. Hooker: ‘Joseph Alley’s Enharmonic Organ’, Music, xi (1897), 677
J.W. Jordan: ‘Early Colonial Organ-Builders of Pennsylvania’, Pennsylvania Magazine of History and Biography, xxii (1898), 231–3
Church Music and Musical Life in Pennsylvania in the Eighteenth Century, ii (Philadelphia, 1927/R)
W.H. Barnes: The Contemporary American Organ (New York, 1930, 9/1971)
E.W. Flint: The Newberry Memorial Organ at Yale University: a Study in the History of American Organ Building (New Haven, CT, 1930)
W.K. Covell: The Organs of Trinity Church, Newport, R.I. (London, 1935)
C.M. Ayars: Contributions to the Art of Music in America by the Music Industries of Boston, 1640 to 1936 (New York, 1937/R)
C.G. Vardell: Organs in the Wilderness (Winston-Salem, NC, 1944/R)
M.K.D. Babcock: Organs and Organ Builders of Christ Church, Boston, 1736–1945 (Boston, 1946)
E.W. Flint: The Great Organ in the Methuen Memorial Music Hall (Methuen, MA, 1950)
T.W. Dean: The Organ in Eighteenth Century English Colonial America (diss., U. of Southern California, 1960)
J. Fesperman: ‘Music and Organs at “The Old North”, Then and Now’, Organ Institute Quarterly, x/3 (1962–3), 15–28
B. Owen: The Organs and Music of King’s Chapel, 1713–1964 (Boston, 1965, enlarged 2/1991)
W.H. Armstrong: Organs for America (Philadelphia, 1967)
V.C. Dieffenbach: The Dieffenbach Organ Builders (Elizabethtown, PA, 1967)
T.S. Eader: ‘Baltimore Organs and Organ Building’, Maryland Historical Magazine, lxv/3 (1970), 263–82
J.R. Sharp: Tonal Design of the American Organ, 1910–1969 (diss., Michigan State U., 1970)
W.J. Conner: ‘Pipe Scaling in Hook Organs, 1849–1895’, The Diapason, lxii/10 (1970–71), 18, 26–9
W.J. Beasley: The Organ in America as Portrayed in Dwight’s Journal of Music (diss., U. of Southern California, 1971)
B. Owen: ‘A Salem Chamber Organ’, Essex Institute Historical Collections, cx/2 (1974), 111–19
J. Fesperman: Two Essays on Organ Design (Raleigh, NC, 1975)
O. Ochse: The History of the Organ in the United States (Bloomington, IN, 1975)
A. Robinson, ed.: The Bicentennial Tracker (Wilmington, OH, 1976)
J. Ogasapian: Organ Building in New York City, 1700–1900 (Braintree, MA, 1977)
J.O. Wilkes: Pipe Organs of Ann Arbor (Ann Arbor, 1977, 4/1995)
V. Brown: ‘Carl Barckhoff and the Barckhoff Church Organ Company’, The Tracker, xxii/4 (1978), 1
U. Pape: The Tracker Organ Revival in America/Die Orgelbewegung in Amerika (Berlin, 1978)
B. Owen: ‘Colonial Organs’, JBIOS, iii (1979), 92
B. Owen: The Organ in New England (Raleigh, NC, 1979)
J. Fesperman: Flentrop in America (Raleigh, NC, 1982)
U. Pape, ed.: Organs in America (Berlin, 1982–4)
B. Owen: ‘Early Organs and Organ Building in Newburyport’, Essex Institute Historical Collections, cxxi/3 (1985), 172–95
B. Owen: ‘Eighteenth-Century Organs and Organ Building in New England’, Music in Colonial Massachusetts 1630–1820: Boston 1973, 655–714
F. Noack and R. Jones: ‘The Organ in Mechanics Hall, Worcester, Mass’, JBIOS, x (1986), 43–52
B. Owen: ‘Joseph Alley and Richard Pike Morss: Early Organbuilders of Newburyport’, The Tracker, xxxi/1 (1987), 31–9
S.L. Pinel: Old Organs of Princeton (Harrisville, NH, 1989)
R.J. Brunner: That Ingenious Business: Pennsylvania German Organ Builders (Birdsboro, PA, 1990)
C. Callahan, ed.: The American Classic Organ: a History in Letters (Richmond, VA, 1990)
G.D. Frank: A German Organ Builder on the Texas Frontier: the Life and Work of Johann Traugott Wandke (Harrisville, NH, 1990)
B. Owen: The Mormon Tabernacle Organ: an American Classic (Salt Lake City, 1990)
D.H. Fox: A Guide to North American Organbuilders (Richmond, VA, 1991)
M. Kares: Das deutsche Element in amerikanischen Orgelbau (diss., U. of Marburg, 1991)
L. Edwards, ed.: The Historical Organ in America (Easthampton, MA, 1992)
C. Johnson: Catalogue of Pipe Organs in Georgia (Atlanta, GA, 1992)
K. Herman: The Historic Spreckels Organ in Balboa Park (San Diego, 1993)
S.L. Pinel: ‘Thomas and William Robjohn: a Study in Innovative Organ Building’, JAMIS, xix (1993), 65–104
The Wanamaker Grand Organ (Philadelphia, 1996)
L. Garrett: ‘American Organ Reform in Retrospect’, American Organist, xxxi (1997), no.6, pp.58–65; no.8, pp.72–8
D. Dahl: ‘The Tracker Organ Revival in the Pacific Northwest’, The Tracker, xlii/2 (1998), 13–23
R. Biswanger: Music in the Marketplace: the Story of Philadelphia’s Historic Wanamaker Organ (Philadelphia, 1999)
G. Hudson: ‘The Organs and Organists of the Cathedral Church of St. Michael, Barbados’, The Organ, xxix (1949–50), 169–79
G.P.J. Walker: Strings and Pipe (St Kitts, 1987)
G. Bozeman: ‘The Booth Organ in St. George’s Church, Basseterre, St. Kitts’, The Tracker, xl/2 (1996), 15–19
For further bibliography see entries on types of organ and on individual builders.