Columbia subject headings:
Aleatory music.
Instrumental ensembles.
Sextets (Piano, clarinet, flute, percussion, violin, cello)
Vocalises with instrumental ensemble.
Harvard subject headings:
Instrumental ensembles.
Open form music.
Sextets (Piano, clarinet, flute, percussion, violin, cello)
Vocalises (Medium voice) with instrumental ensemble.
Princeton subject headings:
Instrumental ensembles.
Open form music.
Sextets (Piano, clarinet, flute, percussion, violin, cello)
Vocalises (Medium voice) with instrumental ensemble.