Who fashioned a system of teaching modern dance that made it as rigorous as classical ballet?

When performers began rediscovering Bach's music in the nineteenth century, they __________

a) immediately began performing it on Baroque Era instruments b) were baffled by how to perform some of it, including the very difficult trumpet part of the Brandenburg Concerto no. 2 c) were excited because they could make the trumpet parts sound even better with the newer instrument design d) made many changes so that we do not know how Bach actually intended the works to be performed

Gillespie, Monk, and Clark began to experiment with bebop in the

A. 30's. B. 50's. C. 60's. D. 40's.