In twelfth-century Paris, sacred music composers began creating a body of music that satisfied the creative desire to gloss the original plainchant by providing different layers of musical "commentary" above the plainchant. That body of music is known as?

The printing technique invented by a German playwright in search of an inexpensive means of publishing his plays is:

A. wood engraving. B. serigraphy. C. stone relief. D. aquatint. E. lithography.

The singer and composer associated with the royal chapel of Charles VII and later kings of France was:

A) Guillaume Dufay B) Gilles Binchois C) Johannes Ockeghem D) all of these choices