Instruments sound interesting, not because of their sound, but because of the relationship a player has with them. Instrumentalists build a rapport with their instruments, which is what you like and respond to.
I got interested in the idea of music that could make itself, in a sense, in the mid 1960s really, when I first heard composers like Terry Riley, and when I first started playing with tape recorders.
I have the '77 Million Paintings' running in my studio a lot of the time. Occasionally I'll look up from what I'm doing and I think, 'God, I've never seen anything like that before!' And that's a real thrill.
I often say to people that producing is the best-paid form of cowardice. When you produce things, you almost always get credit if it's a good record, but you hardly ever get the blame if it's not! You don't really take responsibility for your work.