Columbia subject headings:
Hofmannsthal, Hugo von, 1874-1929--Criticism and interpretation.
Operas--Germany--20th century--Analysis, appreciation.
Strauss, Richard, 1864-1949. Operas.
Harvard subject headings:
Princeton subject headings:
Hofmannsthal, Hugo von, 1874-1929--Criticism and interpretation.
Operas--Germany--20th century--Analysis, appreciation.
Strauss, Richard, 1864-1949. Operas.
Women in opera.