Columbia subject headings:
Microtonal music.
Octets (Piano, trombone, electronics, violins (2), viola, cello)
String quartets.
Harvard subject headings:
Microtonal music.
Octets (Piano, trombone, electronics (2), violins (2), viola, cello)
String quartets.
Princeton subject headings:
Septets (Piano, trombone, electronics, violins (2), viola, cello)
Sextets (Piano, trombone, violins (2), viola, cello)
String quartets.