"We were set up in the studio and would just go in every day and record. I said to the guys, this is a bit indulgent but would you mind giving me 10 minutes? I’ve been asked to do this thing. All I want you to do is just wander round all of the stuff and bang it, shout, play it. It doesn’t need to make any sense. Hit a drum, wander to the piano, hit a few notes … and then we put a bit of echo on it. It’s very free."
— Paul McCartney on the unreleased avant-garde Beatles song “Carnival of Light”