About two years before he composed his famous Mass, the aging master and churchman Guillaume de Machaut fell in love with the too-young noblewoman Péronne d'Armentière, poetess, dancer, and musician, and an unconditional admirer of the older genius and his works. Their bittersweet story, told in the words of both Machaut and Péronne, and sung to the accompaniment of harps, lutes, and vielles, comprises some of the most beautiful and touching love music of the late Middle Ages, including many songs composed and dedicated by the two lovers to each other in the course of their impossible affair.