Guillaume de Machaut (b. Reims or Machault, Champagne, ca. 1300; d. Reims, 1377) Machaut was the leading composer and poet in fourteenth-century France. He was educated as a cleric and took Holy Orders before becoming secretary to King John of Bohemia. After King John died, Machaut entered the service of the French court and eventually became a canon at Reims. As a poet-musician he brought together the traditions of secular monophony and the new techniques of the ars nova. His musical works include most of the genres that existed at the time he lived. They include twenty-three motets, secular chansons, balladées, and one of the earliest polyphonic settings of the Ordinary.

This composer's works in St. Martin's Chamber Choir's repertoire:

Kyrie from "Messe de Notre Dame"