Columbia subject headings:
Harvard subject headings:
Castrati.
Masses--Excerpts.
Operas--Excerpts
Oratorios--Excerpts.
Vocal music--17th century.
Vocal music--18th century.
Princeton subject headings:
Castrati.
Excerpts.
Masses--Excerpts.
Operas--Excerpts.
Oratorios--Excerpts.
Vocal music--18th century.