The one musician Paul McCartney never wanted in The Beatles: “Quite a mild request”Paul McCartney never wanted to stir the pot whenever he worked with The Beatles. There are no shortage of clips where George Harrison talked about feeling sidelined during the end of the band’s run due to what McCartney was doing. Not everyone could play like he could, but it didn’t take a brain surgeon to figure out why Stuart Sutcliffe wasn’t the right fit. And for someone who was as particular about getting a song right as McCartney was, that was never going to fly, recalling, “He wasn’t very musical, Stuart. When McCartney took over bass duties, though, it became the best blessing in disguise that they could have asked for.