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
Cavalleria rusticana in 1945, the opera had been performed more than 14,000 times in Italy alone. In 1890, following its run of sold-out performances at the Teatro Costanzi, the opera was produced throughout Italy and in Berlin. It received its London premiere at the Shaftesbury Theatre on 19 October 1891 and its Covent Garden premiere on 16 May 1892. American producers vied with each other (sometimes through the courts) to be the first to present the opera in that country. "Cavalleria rusticana" finally had its American premiere in Philadelphia at the Grand Opera House on 9 September 1891, followed by a performance