Johannes de Garlandia and a text attributed to Anonymous IV are the two main sources for composers from this institution. For 10 points each:
[10m] Name this institution home to a medieval school of polyphony where composers such as Pérotin developed organum.
ANSWER: Notre-Dame Cathedral [or Notre-Dame de Paris; accept Notre-Dame School]
[10e] One of the oldest surviving examples of these pieces was written by the ars nova composer Guillaume de Machaut and named for Notre-Dame. These pieces set the Catholic liturgy to music.
ANSWER: masses [or messe; or mass ordinary; accept Messe de Nostre Dame or Mass of Our Lady]
[10h] This composer was called “optimus organista,” or the master of pure organum, in contrast with discant. Anonymous IV credits this composer with creating the Magnus Liber, which Pérotin revised and added to.
ANSWER: Léonin [or Leoninus]
<Toronto A, Classical Music>