Conversation so far:
What happened to the Nitty Gritty Dirt band in 1969?
A cameo appearance in the 1969 musical western film, Paint Your Wagon.
What was the name of a song Nitty Gritty Dirt Band wrote for the 1969 musical western film Paint Your Wagon?
Hand Me Down That Can o' Beans.

Question: What happened to them in 1971?
Self-contained rewrite: What happened to the Nitty Gritty Dirt Band in 1971?