Messe de Nostre Dame, by Guillaume de Machaut
Although Guillaume de Machaut (1300- c.1377) wasn’t the first composer to complete settings for the Mass, he may have been the first to compile all parts into one. This is therefore the earliest known setting of the Ordinary Mass to music. In this great work (filled out by Gregorian Chant by this particular choir), Machaut combines isophony, polyphony, chant, and dissonance.











