Columbia subject headings:
Songs (High voice) with guitar.
Songs with instrumental ensemble.
Songs with piano.
Vocal duets with guitar.
Vocal duets with harp.
Vocal duets with piano.
Vocal trios with piano.
Harvard subject headings:
Songs with guitar
Songs with instrumental ensemble
Songs with piano.
Vocal duets with guitar.
Vocal duets with harp.
Vocal duets with piano.
Vocal trios with piano.
Princeton subject headings:
Songs (High voice) with guitar.
Songs with instrumental ensemble.
Songs with piano.
Songs.
Vocal duets with guitar.
Vocal duets with harp.
Vocal duets with piano.
Vocal trios with piano.