Pair support McCartney's son at intimate show
Veteran singer says bettering his former band is "not an easy task"
The Beatles man opens up about his sessions with the Fab Four
Producer and DJ says Macca's ideas "are just incredible"
The former Beatle is also currently recording a new studio album
The National, Wu-Tang Clan, Alt-J, The xx, The Vaccines, Frank Turner will also play the Tennessee festival in June
Beatles legend says he was right to become vegetarian 30 years ago
Plus, McCartney reveals plans for next solo album
Music legend goes unrecognised in America
Ex-Beatles says local farmers laugh at the livestock on his Scottish farm