Identify important Southern rock bands active in the 1970s, '80s, and/or later.

The Moog synthesizer was difficult to use and to master, but the synthesizer became available to untrained pop musicians with the development of the _____________________

Fill in the blank(s) with correct word

What did many twentieth-century American composers, exemplified by Ives and Copland, attempt to do in their

music?

What will be an ideal response?