Columbia subject headings:
Harvard subject headings:
Church music--Italy--16th century--Congresses.
Church music--Italy--17th century--Congresses.
Princeton subject headings:
Church music--Catholic Church--16th century--Congresses.
Church music--Catholic Church--17th century--Congresses.
Church music--Italy--16th century--Congresses.
Church music--Italy--17th century--Congresses.
Counter-Reformation--Italy--Congresses.