Music is made of what we do when we move, and we can only move in certain ways, in certain ranges of tempo because of the inherent constraints that our bodies offer, or you can call them 'affordances' - that's another word for me. It's a little more positive; doesn't make it seem like a limitation, but rather, a set of opportunities. You can say that that's part of music making, but there's also the imagination. The power of the imagination is kind of trumping - sorry to have to use that word.

It is one thing to be a virtuoso, but a different thing to play with compassion.

The sense of having to be the best at everything gets in the way of anybody doing anything. I put all that aside; it's not worth thinking about when I'm there. My agenda as an artist doesn't go away when I teach. It actually gets intensified.

The thing about physicists is that they tend to think that everything is physics. I don't. That's not what music is to me. You can explain aspects of it in physical terms, including the physics of anatomy: how our bodies move, the torsional moment of inertia, the way you move your body to a beat, the inherent periodicities of the heartbeat, the gait. That's physics, too, I guess - maybe they'd call it biophysics.

You figure out how to create opportunities to make music, and then, if you take care of the music, audiences will come around. They also might leave. What matters is the moment: the moment of making music, with and for and among others, and what that offers to those people in that moment. They might never see me again; they might never learn my name. But it might still be something they carry with them.

What I find the challenge is with working with, say, digital machines - performing electronic music - is that when we play instruments there's a physical act that results in a physical vibration. There's a mapping between our exertions and resultant vibrations, or resonance.

To interact means being among others, and taking others into account in a way, to act.