Columbia subject headings:
Music--20th century.
Music--Europe, Eastern--History and criticism.
Music--United States--History and criticism.
Harvard subject headings:
Music--20th century--History and criticism
Music--Europe, Eastern--History and criticism.
Music--United States--History and criticism
Princeton subject headings:
Music--Europe, Eastern--20th century--History and criticism.
Music--United States--20th century--History and criticism.