McCartney Says The Rolling Stones Were Jealous Of The Beatles

"I talked to Keith Richards recently... well, a couple of years ago, and his take on it was, 'Man, you were lucky, you guys, you had four lead singers,' whereas the Rolling Stones only had one," McCartney told the Radio Times (via Spinner.com). "So [for the Beatles] it wasn't just the frontman and the back-up band. We were an entity. Mick [Jagger] used to call us the four-headed monster. We would show up at places all dressed the same."

In the same interview, the former Beatle said that timing played a key part in the band's success.