Columbia subject headings:
Ave Maria (Music)
Choruses, Sacred (Mixed voices), Unaccompanied.
Motets.
Harvard subject headings:
Ave Maria (Music)
Choruses, Sacred (Mixed voices, 8 parts), Unaccompanied.
Princeton subject headings:
Ave Maria (Music)
Choruses, Sacred (Mixed voices, 8 parts), Unaccompanied.
Motets.