I do flip between being chatty and argumentative - and being a psycho-loner werewolf.

Being used to scientific terminology and theory it was always natural for me to push this stuff into songs.

More people seem to know the Van der Graaf Generator material than my solo work - thanks, I suppose, to their parents' lingering vinyl collections.

If you're going to have a heart attack, mine was the kind to have. I'm thankful that it hasn't affected my output or my capacity to perform. And it has given me a lot to think and write about.

I continue to believe, contrary to the given wisdom, that it's more interesting to have an album - or, indeed, an individual song - which has variety rather than homogeneity.

My dictum has always been: 'This show is happening just here, just tonight, with these people who are in this hall, and nobody knows what's going to happen until it's done.'