"If I'm at a point where I go, 'I'm not sure about this,' I'll throw it across the room to John," McCartney tells Rolling Stone. "He'll say, 'You can't go there, man.' And I'll say, 'You're quite right. How about this?' 'Yeah, that's better.' We'll have a conversation. I don't want to lose that."

McCartney's New album is aided by a host of younger production talent - Adele collaborator Paul Epworth, Amy Winehouse producer Mark Ronson, Giles Martin (son of Beatles producer George) and frequent Kings of Leon partner Ethan Johns.

In the interview, McCartney also says that his sometimes-bitter relationship with Lennon's widow, Yoko Ono, is now good. Describing Ono as a "badass," McCartney says he's moved on from any bad blood. "I thought, 'If John loved her, there's got to be something. He's not stupid.'"

"It's like, what are you going to do? Are you going to hold a grudge you never really had?" His also takes wisdom from the words of another late Beatle, George Harrison. "George would say to me, 'You don't want stuff like that hanging around in your life.'"