Which collection of music includes the organa of Perotinus?

Until recently there were few recognized women composers because

a. it was difficult for a woman to have a work published. b. women could not take the advanced courses in composition. c. in many ways it was a man's world. d. all of these choices. e. women were discouraged from composing.

Who in 1941 formed a group called the Almanac Singers?

A) Bob Dylan B) Pete Seeger C) Woody Guthrie D) C. Albert Tindley