Conversation so far:
what is Buffalo Springfield?
Stills, Furay, and Young reunited in Los Angeles and formed the core of Buffalo Springfield.
was it an album?
The band would release three albums: Buffalo Springfield, Buffalo Springfield Again, and Last Time Around.
were the albums hits?
and enjoy only one hit single.
what did he do with Crosby?
Stills played on the Super Session album with Al Kooper and joined up with David Crosby.
did they release other albums together?
Renditions of the latter's "You Don't Have to Cry," led to the formation of Crosby, Stills & Nash.

Question: was crosby playing for anybody else before he joined stills?
Self-contained rewrite: was crosby playing for anybody else besides stills?