Columbia subject headings:
Harvard subject headings:
Choruses, Sacred (Men's voices), Unaccompanied.
Choruses, Secular (Men's voices), Unaccompanied.
Vocal trios with piano.
Princeton subject headings:
Choruses, Sacred (Men's voices), Unaccompanied.
Choruses, Secular (Men's voices), Unaccompanied.
Part songs.
Vocal trios with piano.