Columbia subject headings:
Harvard subject headings:
Choruses, Sacred (Mixed voices), Unaccompanied.
Gregorian chants.
Requiems, Unaccompanied.
Sacred vocal music--France--Corsica--17th century.
Sacred vocal music--France--Corsica--18th century.
Princeton subject headings:
Chants.
Choruses, Sacred (Mixed voices), Unaccompanied.
Gregorian chants.
Requiems, Unaccompanied.
Sacred vocal music--France--Corsica--17th century.
Sacred vocal music--France--Corsica--18th century.