What sculptural form, developed by Alexander Calder, has its parts so carefully balanced that they move with the slightest current of air?

The most important antebellum musical contribution of America's population was which of the following?

A. the blues B. jazz C. the spiritual D. bluegrass

What is a mrdangam?

a. single drum with two heads b. chordophone with three melodic strings c. transverse flute d. double-reed shawm-like instrument