Columbia subject headings:
Organ music--19th century--Analysis, appreciation.
Organ music--20th century--Analysis, appreciation.
Reger, Max, 1873-1916. Organ music.
Harvard subject headings:
Organ music--19th century--Analysis, appreciation.
Organ music--20th century--Analysis, appreciation.
Reger, Max, 1873-1916. Organ music.
Princeton subject headings:
Organ music--Handbooks, manuals, etc.
Reger, Max, 1873-1916. Organ music.