Columbia subject headings:
Ballet--History.
Choreographers--Europe.
Choreographers--United States.
Composers--Europe.
Composers--United States.
Music--History and criticism.
Harvard subject headings:
Ballet--History
Choreographers--Europe.
Choreographers--United States
Composers--Europe.
Composers--United States
Music--History and criticism
Princeton subject headings:
Ballet--History.
Choreographers--Europe.
Choreographers--United States.
Composers--Europe.
Composers--United States.
Music--History and criticism.