Columbia subject headings:
Church music--Austria--18th century--Congresses.
Mozart, Wolfgang Amadeus, 1756-1791. Vocal music--Congresses.
Harvard subject headings:
Church music--Austria--18th century--Congresses.
Church music--Congresses
Mozart, Wolfgang Amadeus, 1756-1791--Congresses.
Mozart, Wolfgang Amadeus, 1756-1791. Vocal music--Congresses.
Princeton subject headings:
Church music--Congresses.
Mozart, Wolfgang Amadeus, 1756-1791--Criticism and interpretation--Congresses.