Columbia subject headings:
Harvard subject headings:
Blues (Music)--Analysis, appreciation.
Jazz--Analysis, appreciation
Lord, Jon--Criticism and interpretation.
Orchestral music--20th century--Analysis, appreciation.
Rock music--Analysis, appreciation
Princeton subject headings:
Blues (Music)--History and criticism.
Jazz--History and criticism.
Music--20th century--History and criticism.
Progressive rock music--History and criticism.