Columbia subject headings:
Hasse, Johann Adolf, 1699-1783--Congresses.
Harvard subject headings:
Hasse, Johann Adolf, 1699-1783--Criticism and interpretation--Congresses.
Music--18th century--Congresses
Princeton subject headings:
Hasse, Johann Adolf, 1699-1783--Criticism and interpretation--Congresses.
Music--18th century--Congresses.