I feel very strongly when there's no chance for me to find a key to a piece.

If you feel you have the right key, you try to make some phrase or sound that will fit.

Jazz, for me, is a closed circuit, like the term baroque in the world of classical music.

You have to react to what's around you in the moment, whatever the music is. Just think of it as some place you have to enter and you need to find the key.

Other times I say: I would very much like to try to do something with this music, but after playing for a few minutes, I have to break off.

There's a certain phraseology involved in jazz, and I've moved away from that.

Coltrane was moving out of jazz into something else. And certainly Miles Davis was doing the same thing.