Columbia subject headings:
Mozart, Wolfgang Amadeus, 1756-1791--Congresses.
Music--Austria--Vienna--18th century--History and criticism--Congresses.
Music--Italy--18th century--History and criticism--Congresses.
Harvard subject headings:
Mozart, Wolfgang Amadeus, 1756-1791--Congresses.
Music--Austria--Vienna--18th century--Congresses.
Music--Italy--18th century--Congresses.
Music--Italy--18th century--History and criticism--Congresses.
Princeton subject headings:
Mozart, Wolfgang Amadeus, 1756-1791--Congresses.
Music--Austria--Vienna--18th century--Italian influences--Congresses.
Music--Italy--18th century--History and criticism--Congresses.