Columbia subject headings:
Harvard subject headings:
Choruses, Sacred (Mixed voices), Unaccompanied.
Choruses, Sacred (Women's voices), Unaccompanied.
Motets.
Princeton subject headings:
Choruses, Sacred (Mixed voices, 4 parts), Unaccompanied.
Choruses, Sacred (Women's voices, 3 parts), Unaccompanied.
Motets.