. When Maurice de Sully became bishop of Paris in 1160, he launched the construction of the cathedral of Notre-Dame, which was largely completed by 1250. An abundance of polyphonic music for the Masses and Offices of major feasts of the liturgical year...

The group of composers working at or near the Notre Dame Cathedral in Paris from about 1170 to 1250, along with the music they produced, is referred to as the Notre Dame school, or the Notre Dame School of Polyphony. The only composers whose names have...