Columbia subject headings:
Music theory--Congresses.
Music--20th century--History and criticism--Congresses.
Harvard subject headings:
Art and music--Congresses.
Music and architecture--Congresses.
Music and literature--Congresses.
Music--20th century--Congresses
Music--21st century--Congresses.
Princeton subject headings:
Arts, Modern--History--Congresses.
Music theory--Congresses.
Music--20th century--History and criticism--Congresses.