Columbia subject headings:
Oratorio--Italy--Rome--Congresses.
Sacred music--Italy--Rome--Congresses.
Harvard subject headings:
Church music--Italy--Rome--17th century--History and criticism.
Church music--Italy--Rome--18th century--History and criticism.
Music--Italy--Rome--17th century--History and criticism.
Music--Italy--Rome--18th century--History and criticism.
Oratorio--Italy--Rome--17th century--Congresses.
Oratorio--Italy--Rome--18th century--Congresses.
Princeton subject headings:
Oratorio--Italy--Rome--Congresses.
Sacred music--Italy--Rome--Congresses.