Columbia subject headings:
Avant-garde (Music)--United States--History and criticism.
Cage, John--Criticism and interpretation.
Cage, John--Performances.
Performative (Philosophy)
Silence in music.
Harvard subject headings:
Cage, John--Aesthetics.
Music--Philosophy and aesthetics
Performative (Philosophy)
Silence in music.
Princeton subject headings:
Cage, John--Criticism and interpretation.
Music--Philosophy and aesthetics.