Columbia subject headings:
Harvard subject headings:
Chamber operas
Magnus, Saint, Earl of Orkney, 1076?-1115?--Drama.
Operas--Scores
Operas--Vocal scores with piano
Scores
Vocal scores
Princeton subject headings:
Arrangements (Music)
Magnus, Saint, Earl of Orkney, 1076?-1115?--Drama.
Operas--Scores.
Operas--Vocal scores with piano.
Operas.
Scores.
Vocal scores.