Conversation so far:
what happened to the incredible string band in 1971?
The band continued to tour and record.
Rose Simpson left in 1971 and was replaced by Malcolm Le Maistre.
why did he leave?
Mike Heron took time out to record a well-received solo album.
was he successful?
Mike Heron took time out to record a well-received solo album, Smiling Men with Bad Reputations.

Question: did he return to the band?
Self-contained rewrite: did Rose Simpson ever return to the Incredible String Band?