TRUE
true
Charlemagne was not a composer; he was a medieval emperor. Leonin and Perotin were composers from the Notre Dame school of organum in the 12th century, while Machaut was a composer from the ars nova period in the 14th century.
Perotin
Notre Dame .
Quite possibly Notre Dame. Yes, it would have been Notre Dame in Paris, although the building the cathedral was barely 20 years into the construction and it wouldn't be finished for another century. The first mention we have of Perotin is in "Anonymous IV" which was an English music student's notebook from ca.1280. Consequently there is no contemporary mention of Perotin during his lifetime, if he existed. Today, we use "Perotin" to personify the 2nd generation of Notre Dame composers - a period of amazing strides in 3- and 4-part polyphony.
Leonin
Cathedral of Notre Dame in Paris
Guillaume de Machaut
The composer known as Pérotin or "Perotin the Great" was born circa 1200 AD. Some of his musical compositions were recorded in the "Magnus Liber" of Notre Dame cathedral in Paris.
Notre Dame is the correct capitalization of the school.
Notre Dame School of Architecture was created in 1898.
Notre Dame Law School was created in 1869.