Columbia subject headings:
Choruses (Children's voices), Unaccompanied.
Choruses (Women's voices), Unaccompanied.
Part songs, Sacred.
Part songs.
Vocal music--Scores.
Harvard subject headings:
Choruses (Children's voices), Unaccompanied.
Choruses (Women's voices), Unaccompanied.
Part songs--16th century.
Part songs--17th century.
Princeton subject headings:
Choruses (Equal voices), Unaccompanied.
Songs.
Vocal duets, Unaccompanied.
Vocal music--16th century.