Columbia subject headings:
Dramatic music--Europe, German-speaking--History and criticism--Congresses.
Dramatic music--Europe--20th century--History and criticism--Congresses.
Dramatic music--Europe--History and criticism--Congresses.
Musical theater--Europe, German-speaking--History--Congresses.
Musical theater--Europe--History--20th century--Congresses.
Musical theater--Europe--History--Congresses.
Harvard subject headings:
Dramatic music--Europe, German-speaking--History and criticism--Congresses.
Dramatic music--Europe--20th century--History and criticism--Congresses.
Dramatic music--Europe--History and criticism--Congresses.
Dramatic music--Europe--History and criticism.
Musical theater--Europe, German-speaking--History--Congresses.
Musical theater--Europe--History--20th century--Congresses.
Musical theater--Europe--History--Congresses.
Theater--Europe--History and criticism.
Princeton subject headings:
Dramatic music--Europe--History--Congresses.
Incidental music--Europe--History--Congresses.
Music--Europe--History and criticism--Congresses.
Musical theater--Europe--History--Congresses.
Theater--Europe--History--Congresses.