I did cocaine for about a year around the time of Sgt Pepper. Coke and maybe some grass to balance it out. I was never completely crazy with cocaine. I'd been introduced to it and at first it seemed OK, like anything that's new and stimulating. When you start working your way through it, you start thinking: 'Mmm, this is not so cool an idea,' especially when you start getting those terrible comedowns.

Hamburg totally wrecked us. I remember getting home to England and my dad thought I was half-dead. I looked like a skeleton, I hadn't noticed the change, I'd been having such a ball!

Jet, I can almost remember their funny faces

Sometimes when you write a thing you think, 'Oh, this is good', and it's not a modesty or an immodesty thing, you just... it's just the same with anything; when you write a piece you just figure, 'Oh yeah, I'm on a roll here. This is good; I'm getting the hang of this'. Some pieces are better than others.

I'm not into, Hey, what's your sign? or any of that. But I don't know how I got here, and I don't know how I write songs. I don't know why I breathe.

I was still 15 when I met John Lennon at a village fete in Woolton, in Liverpool.

My so-called career is a haphazard thing.