In the 1960s, which city reprised its role as the geographical center of a style of jazz?

The musical form of the ballata is:

A) AAB B) ABaAabAB C) AbbaA D) AaBC

_____ Wagner’s demand for “unity of production:”

A). Sought to filter all stage expressions through a single artistic consciousness B). Sought to demonstrate the effects of environment and heredity through realistic, “box-set” scenery C). Sought for crowd scenes to be played by large groups of actors unified by a single purpose