Columbia subject headings:
Aleatory music.
Choruses, Secular (Mixed voices), Unaccompanied.
Electronic music.
Electronics with instrumental ensemble.
Harvard subject headings:
Aleatory music.
Choruses, Secular (Mixed voices), Unaccompanied.
Electronic music.
Electronics with instrumental ensemble.
Princeton subject headings:
Aleatory music.
Choruses, Secular (Mixed voices), Unaccompanied.
Electronics with instrumental ensemble.