In the late-1960s, George became friends with Eric Clapton. The Beatle asked Clapton to perform on his White Album hit, “While My Guitar Gently Weeps,” and George wrote “Savoy Truffle” for Clapton.

George didn’t have the same problem when he played with, say, Bob Dylan or his friend Eric Clapton. During a trip to America in late ’68, George jammed with both Dylan and Clapton, the latter of whom ...

Max Turnbull’s newest group takes its name from a song co-written by Eric Clapton and George Harrison—then stretches it from a three-minute pop song into a 14-minute improvisatory mission statement.