The Mothers of Invention were led by composer, guitarist, singer, and bandleader Frank Zappa, a singular musical figure during a performing and recording career that lasted from the 1960s to the '90s. His disparate influences included doo wop music and avant-garde classical music; although the Mothers were called a rock & roll band for much of their years together, Zappa used them to create a hybrid style that bordered on jazz and complicated, modern serious music. As if his music were not challenging enough, he overlay it with highly satirical and sometimes abstractly humorou...