Columbia subject headings:
Music--History and criticism.
Ortlepp, Ernst, 1800-1864--Criticism and interpretation.
Harvard subject headings:
Music--Germany--19th century--Reviews.
Musical criticism--Germany--19th century.
Opera--Germany--19th century--Reviews.
Ortlepp, Ernst, 1800-1864--Criticism and interpretation.
Princeton subject headings:
Music--History and criticism.
Ortlepp, Ernst, 1800-1864--Criticism and interpretation.