Columbia subject headings:
Operas--Excerpts.
Songs (High voice) with orchestra.
Songs (High voice) with piano.
Harvard subject headings:
Operas--Excerpts
Songs (High voice) with orchestra.
Songs (High voice) with piano.
Princeton subject headings:
Excerpts.
Operas--Excerpts.
Songs (High voice) with flute.
Songs (High voice) with orchestra.
Songs (High voice) with piano.