Columbia subject headings:
Harvard subject headings:
Canons, fugues, etc. (Voices)
Choruses, Secular (Men's voices), Unaccompanied.
Choruses, Secular (Mixed voices), Unaccompanied.
Choruses, Secular (Women's voices), Unaccompanied
Princeton subject headings:
Canons, fugues, etc. (Chorus)
Choruses, Secular (Men's voices), Unaccompanied.
Choruses, Secular (Mixed voices), Unaccompanied.
Choruses, Secular (Women's voices), Unaccompanied.