If you think of the way a composer or say a pop arranger works - he has an idea and he writes it down, so there's one transmission loss. Then he gives the score to a group of musicians who interpret that, so there's another transmission loss. So he's involved with three information losses. Whereas what I nearly always do is work directly to the sound if it doesn't sound right. So there's a continuous loop going on.

When you build a building, you finish a building. You don't finish a garden; you start it, and then it carries on with its life. So my analogy was really to say that we composers or some of us should think of ourselves as people who start processes rather than finish them. And there might be surprises.

Art is not an object, but a trigger for experience.

The point about melody and beat and lyric is that they exist to engage you in a very particular way. They want to occupy your attention.

Except in a few cases like Music for Airports, which was a very clear case of noticing a niche [and] saying, "Okay, there's this situation in which people always play music, and nobody has written music for that situation so I'm going to." So, that was a very clear example of spotting a niche and working for it. I have done that occasionally.

I think the other thing that's important is getting to a place, which very, very rarely happens with improvising groups, where somebody can decide not to play for a while. You watch any group of musicians improvising together and they nearly all play nearly all the time. In fact I often say that the biggest difference between classical music and everything else is that classical musicians sometimes shut up because they're told to, because the score tells them to. Whereas any music that's sort of based on folk or jazz, everybody plays all the time.

You know that in order to copyright material somebody has to write it down for you. Any piece of recorded material has to be scored in order for it to be copyrighted. I've seen the scores of my things and they don't resemble the music in any way. If you give them to somebody who has never heard the music and say, "What does this sound like to you?" they'll play you something that has no relationship with the music it derives from. Notation simply isn't adequate.