David Mamet we all know is a great screenplay writer and playwright and a great director. If you like him, you like him. If you hate him, you really hate him. He's someone who's into controversy, you know what I mean? That's David Mamet.
I had the fortunate experience to play with people from different schools of music. Sam Rivers is from the fundamentalist school of music.
I do it as a therapy. I do it as something to keep me alive. We all need a little discipline. Exercise is my discipline.