Giacomo Puccini (1858 – 1924) was an Italian opera composer who has been called "the greatest composer of Italian opera after Verdi." Puccini's early work was rooted in traditional late-19th-century romantic Italian opera. Later, he successfully developed his work in the realistic verismo style, of which he became one of the leading exponents. Puccini's most renowned works are La bohème (1896), Tosca (1900), and Madama Butterfly (1904), all of which are among the important operas performed as standards. He is represented in the H.W. Gray catalog with his Messa Di Gloria.