Jean Mouton (1459-1522) Anna Requiescat In Pace - Motets and Magnificat Ensemble Jacques Moderne While Jean Mouton may have left few traces in history and society, as a composer he occupies an important place in the history of music, his works include twenty-five songs, nine madrigals, fifteen masses, and nearly one hundred motets. he ranks as one of the most prolific composers of motets during the early part of the sixteenth century.