"a tradition evolving from the empiricism of Ives, Varese, and Cage, has been passed over as 'iconoclastic' - another word for unprofessional. In music, when you do something new, something original, you're an amateur. Your imitators - these are the professionals. It is these imitators who are interested not in what the artist did, but the means he used to do it.... The "freedom" of the artist is boring to [the imitator] because in freedom he cannot reenact the role of the artist."