Columbia subject headings:
Church music--18th century--History and criticism--Congresses.
Church music--19th century--History and criticism--Congresses.
Organ music--18th century--History and criticism--Congresses.
Organ music--19th century--History and criticism--Congresses.
Harvard subject headings:
Church music--18th century--History and criticism--Congresses.
Church music--19th century--History and criticism--Congresses.
Organ music--18th century--History and criticism--Congresses.
Organ music--19th century--History and criticism--Congresses.
Princeton subject headings:
Church music--18th century--Congresses.
Church music--19th century--Congresses.
Organ music--18th century--History and criticism--Congresses.
Organ music--19th century--History and criticism--Congresses.