Guillaume de machaut's most famous work is titled what?

Which style of polyphony uses a borrowed chant and arranges several new melodies and texts above and unrelated to the chant?

Which function of nonverbal communication is at work? trey was planning a surprise party for lynn, but when she asked him why they couldn't go out on friday, trey shifted his eyes, coughed, and stuttered when he said he already had plans. what did trey's nonverbal communication do for lynn? clarify the relationship regulate the interaction increase persuasive power reveal discrepancies manage impressions

Describe the discovery and importance of this piece of ancient african art.