Columbia subject headings:
Music--500-1400--History and criticism.
Polyphonic chansons--History and criticism.
Harvard subject headings:
Music--France--500-1400--History and criticism.
Polyphonic chansons--500-1400--History and criticism.
Princeton subject headings:
Music--France--500-1400--History and criticism.
Polyphonic chansons--500-1400--History and criticism.