Conversation so far:
Where did Buffalo Springfield first begin their career?
Buffalo Springfield formed in Los Angeles in 1966.
Who were the members of Buffalo Springfield?
Buffalo Springfield formed in Los Angeles in 1966 with Stephen Stills, Dewey Martin, Bruce Palmer, Richie Furay, and Neil Young.
Where did the name Buffalo Springfield come from?
Buffalo Springfield's name was taken from a brand of steamroller made by the Buffalo-Springfield Roller Company.
When did Buffalo Springfield make their debut?
Buffalo Springfield debuted on April 11, 1966, at The Troubadour in Hollywood.
Who were some of the other acts Buffalo Springfield performed with at the Troubadour besides Buffalo Springfield?
What genre of music did Buffalo Springfield play?
Buffalo Springfield was a Canadian-American rock band whose genre fell into Folk rock, psychedelic rock, and country rock.
Who was Buffalo Springfield's drummer?
Dewey Martin played the drums.

Question: Were they ever an opening act for anyone?
Self-contained rewrite: Were Buffalo Springfield ever an opening act for anyone?