Pietro Antonio Stefano Mascagni (December 7, 1863 – August 2, 1945) was an Italian composer. He was born in Livorno, Tuscany and died in Rome. In 1890, he wrote the one-act opera, Cavalleria rusticana. This famous opera is often paired with Ruggero Leoncavallo's I pagliacci. Mascagni also wrote Iris, L'amico Fritz. and other operas. He married Lina Carbognani in 1889. They had two sons and one daughter.