Columbia subject headings:
Church music.
Music--17th century--History and criticism.
Music--18th century--History and criticism.
Opera.
Harvard subject headings:
Church music.
Music--17th century--History and criticism
Music--18th century--History and criticism
Opera.
Princeton subject headings:
Church music.
Music--17th century--History and criticism.
Music--18th century--History and criticism.
Opera.