Final answer:
The incorrect statement is about the composer of the Messe de Nostre Dame being Chaucer, which is inaccurate.
Explanation:
The incorrect statement about the Messe de Nostre Dame is option c. This composition was not composed by Chaucer; it was created by Guillaume de Machaut around 1364. The Mass is renowned as one of the first works to set all five movements of the mass ordinary as a complete whole, revolutionizing medieval music.
This piece of music was most likely performed weekly in a side chapel of the Reims Cathedral and was significant in the development of polyphonic music during the medieval period.
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