Columbia subject headings:
Harvard subject headings:
Composers--15th century--History and criticism--Congresses.
Music--15th century--History and criticism--Congresses.
Ockeghem, Johannes, approximately 1410-1497--Congresses.
Princeton subject headings:
Composers--15th century--History and criticism--Congresses.
Music--15th century--History and criticism--Congresses.
Ockeghem, Johannes, approximately 1410-1497--Congresses.