As a lifelong Beatles fan, I thought I knew all their stories, but here’s one I’d never heard before — the one about Paul McCartney showing up at a studio in LA where John Lennon, Stevie Wonder, Harry Nilsson, and Bobby Keys were recording some material, and jamming with them for several hours. This was in 1974, four years after the Beatles broke up and the two halves of the greatest songwriting team in rock history had gone their separate ways with solo careers. Even more intriguing: the next day, they got together at a pool party at Lennon’s rented home in Malibu and nearly sparked a Beatles reunion.

Russell Hall recaps the story that was revealed in the recent McCartney biography by Peter Carlin.