I don’t really know what to say about the Mothers of Invention except Frank Zappa. Does that explain anything or everything? They were formed in 1964 as the backing band for Frank Zappa. We’re Only in it for the Money is their third studio album and was released in 1968. The words rock, experimental, and psychedelic were all used to describe the album on several different websites. I hated it. I cannot express how much.