Columbia subject headings:
Orchestral music--Analysis, appreciation--Congresses.
Schoenberg, Arnold, 1874-1951--Congresses.
Harvard subject headings:
Orchestral music--20th century--Congresses.
Schoenberg, Arnold, 1874-1951. Orchestra music--Congresses.
Princeton subject headings:
Schoenberg, Arnold, 1874-1951--Criticism and interpretation--Congresses.