Conversation so far:
What did Frank Zappa disband from?
In late 1969, Frank Zappa broke up the band, Mothers of Invention.
Why did Frank Zappa break up with the band Mothers of Invention?
Frank Zappa often cited the financial strain as the main reason, but also commented on the band members' lack of sufficient effort.

Question: What year did this occur?
Self-contained rewrite: What year did Frank Zappa break up with Mothers of Invention?