Hariclea Darclée "Roméo et Juliette" (Juliette); Jacques Halévy "La Juive" (Rachèle); Ruggero Leoncavallo "I Pagliacci" (Nedda) – opera interpreted in première for Romania at Bucharest National Theatre in 1903; Ruggero Leoncavallo "Zaza" (Zaza); Luigi Mancinelli "Hero e Leandro" (Hero) – opera composed for her voice and interpreted in prima assoluta at Madrid, in 1897; Pietro Mascagni "Cavalleria rusticana" (Santuzza) – oper interpreted in première for Romania at Bucharest National Theatre in 1891; Pietro Mascagni "L’amico Fritz" (Suzel) – opera interpreted in première for Teatro Della Pergole of Florence in 1891 and for Bucharest National Theatre in 1910; Pietro Mascagni "Iris" (Iris) –
Mala Pasqua! his attention to composing his first opera, "Fatma", an opera-ballet in four acts. However, he set the project aside in 1888 when the music publisher Sonzogno announced a competition for one-act operas, open to all young Italian composers who had not yet had an opera performed on stage. The three winners (selected by a jury of prominent critics and composers) would be staged in Rome at Sonzogno's expense. Gastaldon decided to enter with an opera based on "Cavalleria rusticana". His librettist, Giovanni Domenico Bartocci-Fontana, a lawyer by training and a poet by inclination, wrote to Verga asking permission to adapt