And without helping himself to a slice of the songwriting credits, which would have been standard practice. The failure of George Martin to rip them off remains one of the most bizarre elements of their story.

When Brian Wilson first heard the Beatles’ Rubber Soul, his mind was blown. “If I ever do anything in my life, I’m going to make that good an album,” he thought at the time. He went on to explain, “I was so happy to hear it that I went and started writing ‘God Only Knows.’ ”

This tale is extremely famous, but much less well-known is the fact that Paul plays drums on it. And the reason: Ringo just quit the band.