Columbia subject headings:
Choruses, Sacred (Mixed voices) with instrumental ensemble.
Choruses, Secular (Mixed voices) with piano.
Songs (High voice) with piano.
Vocal duets with flute and harp.
Harvard subject headings:
Choruses, Sacred (Mixed voices) with instrumental ensemble.
Choruses, Secular (Mixed voices) with piano.
Songs (High voice) with piano.
Vocal duets with flute and harp.
Princeton subject headings:
Choruses, Sacred (Mixed voices) with instrumental ensemble.
Electronic music.
Songs (High voice) with instrumental ensemble.
Songs (High voice) with piano.
Songs (Low voice) with instrumental ensemble.
Vocal duets with instrumental ensemble.