Final answer:
Frank Zappa, the late rocker, released more than 60 albums in his lifetime and called his backing band 'The Mothers of Invention'.
Step-by-step explanation:
The late rocker who released more than 60 albums in his lifetime and called his backing band 'The Mothers of Invention' is Frank Zappa. Frank Zappa was an American musician, composer, and producer, known for his eclectic musical style and satirical lyrics. He was a highly influential figure in rock music during the 1960s and 1970s, and his albums with The Mothers of Invention, such as 'Freak Out!' and 'Absolutely Free,' gained critical acclaim.