Columbia subject headings:
Music--Germany--Rhineland--Societies, etc.
Harvard subject headings:
Church music--Germany--Rhineland--Congresses.
Music festivals--Germany--Rhineland--Congresses.
Music--Germany--Rhineland--History and criticism--Congresses.
Music--Germany--Rhineland--Societies, etc.
Princeton subject headings:
Church music--Germany (West)--Rhineland--Congresses.
Music festivals--Germany (West)--Rhineland--Congresses.
Music--Germany (West)--Rhineland--History and criticism--Congresses.