Romance of Zerline from the opera "Fra Diavolo ou L'Hôtellerie de Terracine" ("Fra Diavolo or The Guesthouse of Terracine") Romance of Zerline from the opera "Fra Diavolo ou L'Hôtellerie de Terracine" ("Fra Diavolo or The Guesthouse of Terracine") Main opus "Fra Diavolo ou L'Hôtellerie de Terracine" ("Fra Diavolo or The Guesthouse of Terracina"), Comical opera in three acts