"The Grand Wazoo" is the eleventh album by The Mothers and the sixteenth overall by Frank Zappa, released in November 1972. The album was written and recorded during Zappa's period of convalescence after he was assaulted in London in December 1971.
Along with its predecessor Waka/Jawaka (released in July 1972), The Grand Wazoo represents Zappa's exploration of big band music, marking a natural progression from his earlier work on Hot Rats (1969), which featured a much smaller lineup. This album also marks the last release on Zappa's own Bizarre Records label.
The album was recorded during a time when Zappa was physically impaired following the assault, which had left him unable to tour. The incident occurred on December 10, 1971, when Zappa was pushed offstage into an orchestra pit during a concert at the Rainbow Theatre in London. As a result, The Grand Wazoo features mostly instrumental compositions, similar in style to previous albums like Hot Rats, Burnt Weeny Sandwich (1970), and Waka/Jawaka.
Despite the challenges he faced during this time, Zappa continued to push musical boundaries with The Grand Wazoo, experimenting with jazz, rock, and orchestral elements. The album was well-received for its complex arrangements and the skillful integration of big band music with Zappa's unique sound.