Columbia subject headings:
Harpsichord music--History and criticism.
Music--Germany--History and criticism.
Organ music--History and criticism.
Harvard subject headings:
Harpsichord music--17th century--History and criticism.
Music--Germany--History and criticism
Organ music--17th century--History and criticism.
Princeton subject headings:
Harpsichord music--To 1800--History and criticism.
Music, German--History and criticism.
Organ music--To 1800--History and criticism.