Columbia subject headings:
Folk songs, Italian--Italy--Naples--History and criticism.
Gambardella, S. (Salvatore), 1873-1913.
Music-halls (Variety-theaters, cabarets, etc.)--Italy--History.
Popular music--Italy--Naples--History and criticism.
Songs, Neapolitan--History and criticism.
Harvard subject headings:
Composers--Italy--Naples--Biography.
Gambardella, S. (Salvatore), 1873-1913
Princeton subject headings: