Columbia subject headings:
Music--Germany--Halle an der Saale--17th century--Congresses.
Music--Germany--Halle an der Saale--18th century--Congresses.
Music--Germany--Halle an der Saale--19th century--Congresses.
Music--Germany--Halle an der Saale--20th century--Congresses.
Harvard subject headings:
Music--Social aspects--Germany--Halle an der Saale--History--17th century--Congresses.
Music--Social aspects--Germany--Halle an der Saale--History--20th century--Congresses.
Princeton subject headings: