Columbia subject headings:
Operas--Interpretation (Phrasing, dynamics, etc.)
Singing--Interpretation (Phrasing, dynamics, etc.)
Harvard subject headings:
Operas--Interpretation (Phrasing, dynamics, etc.)
Singing--Interpretation (Phrasing, dynamics, etc.)
Princeton subject headings:
Operas--Interpretation (Phrasing, dynamics, etc.)
Singing--Interpretation (Phrasing, dynamics, etc.)