A.Mathematical ability and musical ability are connected.
B.Mathematical ability has more to do with the brain than musical ability.
C.More people are good at music than math.
D.More research should be done into the relationship between the mathematical ability and musical ability.
A.Are musical ability and mathematical ability connected?
B.Why have blacks been greatly over represented in the development of American popular music?
C.What kinds of music require formal training?
D.What are the contributions made by black musicians?