Verismo (music) of the poor, that had not generally been seen as a fit subject for literature. A short story by Verga called "Cavalleria rusticana" (), then developed into a play by the same author, became the source for what is usually considered to be the first "verismo" opera: "Cavalleria rusticana" by Mascagni, which premiered on 17 May 1890 at the Teatro Costanzi in Rome. Thus begun, the operatic genre of "verismo" produced a handful of notable works such as "Pagliacci", which premiered at Teatro Dal Verme in Milan on 21 May 1892, and Puccini's "Tosca" (premiering at the Teatro Costanzi in
Herva Nelli del destino", Puccini's "Tosca" (conducted by Eugene Ormandy), and "Un ballo in maschera". In 1951, Nelli reappeared with the New York City Opera, in "Cavalleria rusticana" again, as well as "Aida"; the next year, she portrayed Maddalena de Coigny in Giordano's "Andrea Chénier" (in Theodore Komisarjevsky's production). With the San Francisco Opera, in 1951 and 1952, the soprano sang in "Otello", "La forza del destino" (with Robert Weede), "Aida" (with Mario Del Monaco), "Cavalleria rusticana", "Il trovatore", and "La bohème" (this last on tour to Los Angeles); in 1957, she returned for "Un ballo in maschera". With the Baltimore Civic