When I find a cover song that I like, I'll work away at it until I kind of believe that I wrote it.

I've always felt quite like an outsider. I don't really belong in the mainstream, and I quite like that.

I'm still kind of a hapless character in my everyday life. But when it comes to the writing, my influences are very old influences. I love American music of absolutely all stripes, including show tunes, advertising jingles, theme tunes from quiz shows, all kinds of American music.

I knew how the suits used to talk about the artists, with barely concealed contempt. So I knew what was waiting for me round the corner. Because I wasn't one of those very unusual people like Neil Diamond or Elton John, whose careers just seem to span the decades. I knew I wasn't one of them.

Well, this is shortly after the idea was put to me because it wasn't my idea to do a Christmas record. We can talk about that a little bit, if you like, later on. But I wrote that song actually about two days after the idea was put to me.

I think the best songs that come to me are ones that you sort of listen for. The ones - when I listen to some of my old stuff, I can tell when I had a good idea, but I forced it through, and I can hear myself - the bit that I've written, which sounds clunkier than the stuff that just sort of comes.

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.