I'd like to be able to go on holiday and not to have to hold my belly in for two whole weeks. - Paul McCartney

One of the things I always thought was the secret of The Beatles was that our music was self-taught. We were never consciously thinking of what we were doing. Anything we did came naturally. A breathtaking chord change wouldn't happen because we knew how that chord related to another chord. We weren't able to read music or write it down, so we just made it up. My dad was exactly the same. And there's a certain joy that comes into your stuff if you didn't mean it, if you didn't try to make it happen and it happens of its own accord. There's a certain magic about that. So much of what we did came from a deep sense of wonder rather than study. We didn't really study music at all.

What a fucking great band we were.

While the others had got married and moved out to suburbia, I had stayed in London and got into the arts scene through friends like Robert Fraser and Barry Miles and papers like The International Times. We opened the Indica gallery with John Dunbar, Peter Asher and people like that. I heard about people like John Cage, and that he’d just performed a piece of music called 4’33” (which is completely silent) during which if someone in the audience coughed he would say, ‘See?’ Or someone would boo and he’d say, ‘See? It’s not silence—it’s music.’ I was intrigued by all of that. So these things started to be part of my life. I was listening to Stockhausen; one piece was all little plink-plonks and interesting ideas. Perhaps our audience wouldn’t mind a bit of change, we thought, and anyway, tough if they do! We only ever followed our own noses—most of the time, anyway. ‘Tomorrow Never Knows’ was one example of developing an idea.