(fl 14th century). French theorist. He was from the abbey of St Denis on the outskirts of Paris and is known only as the compiler of the Tractatus de musica, which probably dates from shortly after 1321. The treatise is in two parts: the first, ‘Musica theoretica’, is largely derived from the Notitia artis musice of Jehan des Murs; the second, ‘Musica practica’, is a collection of rules on mensural notation drawn from at least two sources. Part of the Tractatus was published as Coussemaker's Anonymous VI (CoussemakerS, iii, 398–403).
K. von Fischer: ‘Eine wiederaufgefundene Theoretikerhandschrift des späten 14. Jahrhunderts (Chicago, Newberry Library, MS 54.1…)’, Schweizer Beiträge zur Musikwissenschaft, i (1972), 23–33
U. Michels, ed.: Johannes de Muris Notitia artis musicae, CSM, xvii (1972), 38–41; appx, 147–66 [edn of Tractatus de musica]
A. Gallo: ‘Die Notationslehre im 14. und 15. Jahrhundert’, Die mittelalterliche Lehre von der Mehrstimmigkeit, Geschichte der Musiktheorie, ed. F. Zaminer, v (Darmstadt, 1984), 259–356, esp. 277–8
GORDON A. ANDERSON/C. MATTHEW BALENSUELA