I'm very fussy about how my records sound, but I'm very aware that because of the way they sound, I will never be a big-selling, mainstream artist because the public has gotten conditioned to hearing pop music in a certain way. And I don't do it that way.

As soon as one of my records goes on, it makes a vast portion of the public nervous. They get spooked by it. To some people who have ears to hear, it's a delightful, refreshing change. But to most of the public, it's a load of homemade-sounding nonsense.

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.

You want to sing this song. And so it goes on until eventually, after - well, however long it can take - sometimes a few days, sometimes months - you piece the whole thing together.

In the '70s, you had to come up with an album every year whether you were ready or not.

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.

And there were sort of three toys for boys and three toys for girls. And the boys I can remember was, well, there was a Dan Dare Ray Gun. Dan Dare was a sort of a cartoon character. He was just sort of a - he was like a Battle of Britain fighter pilot, only in space.