Columbia subject headings:
Composition (Music)--History--20th century.
Composition (Music)--History--21st century.
Music theory.
Music--20th century--History and criticism.
Music--21st century--History and criticism.
Harvard subject headings:
Composition (Music)--History--20th century.
Composition (Music)--History--21st century.
Music theory.
Music--20th century--History and criticism
Music--21st century--History and criticism
Princeton subject headings: