Conversation so far:
What happened to Peter Green post-Fleetwood Mac?
On 27 June 1970, Peter Green appeared at the Bath Festival of Blues and Progressive Music with John Mayall, Rod Mayall (organ), Ric Grech (bass) and Aynsley Dunbar (drums).
Did Fleetwood Mac ever get back together?
In 1971, Peter Green had a brief reunion with Fleetwood Mac, helping them to complete a US tour after guitarist Jeremy Spencer left, performing under the pseudonym Peter Blue.
What did each member in the group Fleetwood Mac do?

Question: What else happened in 1971?
Self-contained rewrite: What else happened in 1971 for musician Peter Green besides a brief Fleetwood Mac reunion?