Columbia subject headings:
Music--500-1400--History and criticism.
Music--Italy--History and criticism.
Harvard subject headings:
Music, Italian--History and criticism.
Music--500-1400--History and criticism
Music--500-1400--History and criticism--Congresses.
Music--Italy--500-1400--History and criticism--Congresses.
Princeton subject headings:
Music, Italian--History and criticism.
Music--500-1400--History and criticism.