“A lot of people ask me where music is going today. I think it's going in short phrases. If you listen, anybody with an ear can hear that. Music is always changing. It changes because of the times and the technology that's available, the material that things are made of, like plastic cars instead of steel. So when you hear an accident today it sounds different, not all the metal colliding like it was in the forties and fifties. Musicians pick up sounds and incorporate that into their playing, so the music that they make will be different.”

“Music sounds different to the one who plays it. It is the musician's curse.”

“Today you go into make a modern recording with all this technology. The bass plays first, then the drums come in later, then they track the trumpet and the singer comes in and they ship the tape somewhere. Well, none of the musicians have played together. You can’t play jazz music that way. In order for you to play jazz, you’ve got to listen to them. The music forces you at all times to address what other people are thinking and for you to interact with them with empathy and to deal with the process of working things out. And that’s how our music really could teach what the meaning of American democracy is.”

“I like listening to music, but only the kind you play, absolute music, the kind that makes you feel that someone is rattling at the doors if heaven and hell. I like music very much, I think, because it's so unconcerned with morality.”

“Today you hear people saying that we invented heavy metal with the song ‘Black Sabbath’. But I’ve always had a bee up my arse about the term ‘heavy metal’. To me, it doesn’t say anything musically, especially now that you’ve got seventies heavy metal, eighties heavy metal, nineties heavy metal and new - millennium heavy metal – which are all completely different, even though people talk about them like they’re all the same.”

“Music, to me, is the most beautiful form, and I love film because film is very related to music. It moves by you in its own rhythm. It's not like reading a book or looking at a painting. It gives you its own time frame, like music, so they are very connected for me. But music to me is the biggest inspiration. When I get depressed, or anything, I go "think of all the music I haven't even heard yet!" So, it's the one thing. Imagine the world without music. Man, just hand me a gun, will you?”