Columbia subject headings:
Music--Italy--Emilia-Romagna--History--18th century.
Theater--Italy--Emilia-Romagna--History--18th century.
Harvard subject headings:
Modena (Italy)--History.
Music--Italy--Modena--18th century--History and criticism.
Opera--Italy--Modena--18th century.
Princeton subject headings:
Opera--Italy--Modena--History--18th century.
Theater--Italy--Modena--History--18th century.