I sort of have various sort of theories when people ask me about songwriting because it is a mystery. You don't really know. Sometimes you can do it and sometimes you can't. It's really peculiar.

London was a real dump in the 70s, when it belonged to me and my friends, because, like most cities, you kind of hand them off. You're in charge for a bit and then you don't go out anymore. You say, "Oh god, it's going to be too crowded."

I work very hard on getting the songs as direct and examined as I can before I go in the studio.

I'm playing to the sort of people who like the same records.

I found myself in Zurich Airport. I'd done a TV show, oddly enough, with Mavis Staples. That's the way they do it in Switzerland. And I'd had a bit of a late night with members of her band. And I was - my flight was delayed. And I was sitting in the airport, and I just came up with the idea. And by the time, we landed at Heathrow, I'd pretty much sort of got it.

And the other thing for the sort of posher kids was a sort of lethal scooter, you know. One of the things that you just push along with your - really heavy, lethal, you know, trap your fingers in and every bit of metal got rusty very quickly. And the girls I seem to remember they had a thing like a broomstick with a horse's head on the top which they sat astride.

I'm really lucky that I've had a little gang of people who I've been involved with for a long time... I've been really lucky to have a gang of people who have always been there to encourage me to get on with it. Styles come and go, but I try not to take any notice of that.