Columbia subject headings:
Operas--Excerpts, Arranged.
Sacred songs (High voice) with piano.
Songs (High voice) with piano.
Songs (Low voice) with piano.
Songs (Medium voice) with piano.
Vocal duets with piano.
Harvard subject headings:
Princeton subject headings:
Operas--Excerpts, Arranged.
Sacred songs (High voice) with piano.
Songs (High voice) with piano.
Songs (Low voice) with piano.
Songs (Medium voice) with piano.
Songs.
Vocal duets with piano.