Which medieval composer wrote a theory paper on the importance of new rhythms?

Philippe de Vitry

Explanation:

The medieval composer who wrote a theory paper on the importance of new rhythms was Philippe de Vitry. Philippe de Vitry was a music theorist, poet and composer who studied at the Sorbonne. He was also bishop of Meaux and a diplomat and adviser to Charles IV, Philip VI and John II. He is now mostly remembered for his treatise of music Ars Nova.

whats the question if no question pls tell me

the sculpture i am pretty sure you are talking about is the statue b. the david statue now lives in the galleria dell'accademia, florence, italy. it was made by ‎michelangelo.