Columbia subject headings:
Music--Germany--20th century--History and criticism--Congresses.
National socialism and music--Congresses.
Harvard subject headings:
Music and state--Germany--Congresses.
Music--Germany--20th century--Congresses
National socialism and music--Congresses.
Princeton subject headings:
Music--Germany--20th century--History and criticism--Congresses.
National socialism and music--Congresses.