Columbia subject headings:
Melody.
Music--Italy--19th century--History and criticism.
Opera--Italy--19th century.
Verdi, Giuseppe, 1813-1901--Criticism and interpretation.
Harvard subject headings:
Melody.
Music--Italy--19th century--History and criticism.
Opera--Italy--19th century
Verdi, Giuseppe, 1813-1901--Criticism and interpretation.
Princeton subject headings:
Melody.
Music--Italy--19th century--History and criticism.
Opera--Italy--19th century.
Verdi, Giuseppe, 1813-1901--Criticism and interpretation.