Columbia subject headings:
Operas.
Orchestral music.
Piano music (4 hands)
Piano with orchestra, Arranged.
Piano with orchestra.
Symphonies.
Harvard subject headings:
Operas
Orchestral music.
Piano music (4 hands)
Piano with orchestra.
Princeton subject headings:
Operas.
Orchestral music.
Piano music (4 hands)
Piano with orchestra, Arranged.
Piano with orchestra.
Symphonies.