Columbia subject headings:
Masses--Vocal scores.
Motets.
Part songs.
Sacred vocal music.
Harvard subject headings:
Masses, Unaccompanied--Excerpts.
Motets.
Part songs.
Songs, Unaccompanied.
Princeton subject headings:
Excerpts.
Masses, Unaccompanied--Excerpts.
Masses.
Motets.
Part songs.
Songs, Unaccompanied.
Songs.