Columbia subject headings:
Antiphons (Music)
Christmas music--500-1400.
Easter music--500-1400.
Masses, Unaccompanied--500-1400.
Sacred vocal music--France--Aquitaine--500-1400--Scores.
Tropes (Music)
Harvard subject headings:
Antiphons (Music)
Christmas music--500-1400.
Easter music--500-1400.
Gregorian chants.
Masses, Unaccompanied--500-1400.
Tropes (Music)
Princeton subject headings:
Antiphons (Music)
Christmas music--500-1400.
Christmas music.
Easter music--500-1400.
Easter music.
Masses, Unaccompanied--500-1400.
Masses.
Sacred vocal music--France--Aquitaine--500-1400.
Tropes (Music)