The seven white notes on the piano - each section of the piece (there are 12 sections) is five of those seven white notes. If you calculate it, there are 21 groups of five notes in any group of seven notes. And although there are 12 sections, this piece actually uses nine of those groups because some of the sections repeat earlier ones. So that's the formula. It's very simple as a way of generating something. It's my inner minimalist.

Ideas reflect the moment, and so you have to use them. If you store ideas, they wither.

A lot of the so-called systems composers have this thing that the system is always right. You don't fiddle with it at all. Well, I don't think that. I think the system is as right as you judge it to be. If for some reason you don't like a bit of it you must trust your intuition on that. I don't take a doctrinaire approach to systems.

The seven white notes on the piano - each section of the piece (there are 12 sections) is five of those seven white notes. If you calculate it, there are 21 groups of five notes in any group of seven notes. And although there are 12 sections, this piece actually uses nine of those groups because some of the sections repeat earlier ones. So that's the formula. It's very simple as a way of generating something. It's my inner minimalist.

If you grow up in a very strong religion like Catholicism you certainly cultivate in yourself a certain taste for the intensity of ideas.

Basically, you're still sitting there using just the muscles of your hand, really. Of one hand, actually. It's another example of the transfer of literacy to making music because the assumption is that everything important is happening in your head; the muscles are there simply to serve the head. But that isn't how traditional players work at all; musicians know that their muscles have a lot of stuff going on as well. They're using their whole body to make music, in fact.

For instance, I'm always fascinated to see whether, given the kind of fairly known and established form called popular music, whether there is some magic combination that nobody has hit upon before.