The new engineer, Ryan Nasci, who engineered the whole album, said, “I could call up my roommate, Mitch—I don’t think he’s doing anything.” They have a band together. So Mitch comes down, and the second he plugged in his guitar and started playing, Harry’s eyes just lit up and he was, like, “This is the guy.” Mind you, Mitch is an amazing guitar player, raised on jazz. He’s totally self-taught and he’s playing these riffs, just murdering it. He says, “Why not bring some drums on this?” Harry says, “Oh you play drums too?” And Mitch says, “Well, I’m a drummer”. His favorite drummer is [jazz great] Max Roach. He’s a savant. He had just moved to L.A. from Ohio; he’d never been in a recording studio before. He’d never heard of Harry Styles. He was a dishwasher in a pizza shop… Mitch is a real music lover who just wants to listen Harry Nilssonand Plastic Ono Band all day—he’s like a hipster who doesn’t know what a hipster is. He’s the sweetest, gentlest guy on earth. He and Harry just hit it off.