Machaut Kyrie

This quarter I'm studying Medieval and Renaissance music in a music history class.  By far the most important composer of the 1300's was Guillaume de Machaut.

I am struck by the beauty of his Messe de Notre Dame (Mass of Our Lady), which is the only Mass he wrote.

Have a listen to the nine-fold Kyrie, using Alternatum Praxis (alternating between monophonic chant and choir).  Perhaps you'll recognize the chant Kyrie, Omnipotens genitor.