"For me, the main thing is I love making music so much," McCartney, 71, told the radio station. "If I retired, I'd still do exactly what I do. So I may as well not retire. Retire from what? I'd do this for nothing."
McCartney is living up to his sentiment, having just released a new Mark Ronson-produced single -- appropriately titled "New" -- this week. An accompanying album of the same name will arrive on Oct. 15. In addition to Ronson, other high-profile collaborators on the album include writer/producer Paul Epworth, who has worked with Adele and Foster the People, and Kings of Leon colleague Ethan Johns.
McCartney reflected on his legendary status during the WXRT interview, listing Tom Petty and Dave Grohl as "cool musicians" who've said his music changed their lives.