I'm very interested in religion and different religions, and I know quite a lot about it. I love gospel music, and I love going to churches, but the one drawback is that I don't actually believe in God. And it is quite a handicap, you know.

When my pop career was over, I was scratching my head, thinking, "God, how am I going to do something after I'm forty?" I was in my mid-thirties, thinking I was on the scrap heap.

But anyway, I was convinced that it would go away, you know. But the idea was that he was sitting on a flight - you know, one of those sort of fairly long flights, like, sort of, you know, Newark to Denver or something like that - so, you know, a few hours.

The idea was put to me, and my initial reaction was of slight sort of - I was slightly appalled, really, because in the U.K., we don't - we think it's all a bit vulgar, you know, doing Christmas or cashing in on Christmas. And there's a word we have for it, which is naff. And it's not exactly uncool. It really sort of means kind of vulgar and a bit - not very stylish.

My latest theory is that it's - well, I describe it as, like, being in an apartment with kind of thin walls. And in the apartment next door, they've got a radio tuned constantly on - tuned to a really cool radio station. It's on all the time. And you can just hear it coming through the wall all the time.

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.

These days, rock 'n' roll is much more about rock than about roll. I don't do rock. But I'm interested in that roll part, because that's the funny little bit that makes it hip.