Columbia subject headings:
Choral music--Italy--16th century--Congresses.
Choral music--Italy--17th century--Congresses.
Harvard subject headings:
Choral music--Italy--16th century.
Choral music--Italy--17th century.
Princeton subject headings:
Choral music--Italy--16th century--History and criticism.
Choral music--Italy--17th century--History and criticism.