Columbia subject headings:
English drama--18th century--History and criticism.
Incidental music--England--18th century--History and criticism.
Music in the theater.
Opera--England--18th century.
Harvard subject headings:
English drama--18th century--History and criticism
Incidental music--18th century--History and criticism.
Music in the theater.
Opera--England--18th century.
Princeton subject headings:
English drama--18th century--History and criticism.
Incidental music--England--18th century--History and criticism.
Music in the theater.
Opera--England--18th century.