Columbia subject headings:
Cantors (Church music)--Lutheran Church--Congresses.
Cantus firmus--History and criticism--Congresses.
Chorale--Congresses.
Church music--Lutheran Church--Congresses.
Music--Germany--History and criticism--Congresses.
Music--Instruction and study--Germany--History--Congresses.
Harvard subject headings:
Cantors (Church music)--Lutheran Church--Congresses.
Cantus firmus--History and criticism--Congresses.
Chorale--Congresses.
Church music--Lutheran Church--Congresses.
Lutheran Church--Hymns--History and criticism--Congresses.
Music--Germany--History and criticism--Congresses.
Music--Instruction and study--Germany--History--Congresses.
Princeton subject headings:
Cantors (Church music)--Lutheran Church--Congresses.
Cantus firmus--History and criticism--Congresses.
Chorale--Congresses.
Church music--Lutheran Church--Congresses.
Lutheran Church--Hymns--History and criticism--Congresses.
Music--Germany--History and criticism--Congresses.
Music--Instruction and study--Germany--History--Congresses.