Britannica Sources used in this answer

Who composed the music for Tosca?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Art Nouveau poster by Adolfo Hohenstein for Puccini's opera Tosca, showing a woman in a gold dress standing over a fallen figure, with dramatic red and black background and bold title text. — Tosca Poster by Adolfo Hohenstein for Giacomo Puccini's opera *Tosca*, 1906.

The music for the opera Tosca was composed by the Italian composer Giacomo Puccini.12

Although the rights to the project were initially secured for another composer, Alberto Franchetti, the work was ultimately ceded to Puccini. Puccini was deeply committed to the project's realism, going so far as to research specific liturgical melodies and the precise pitch of bells at St. Peter’s Basilica to ensure the musical score accurately reflected the opera's Roman setting. The opera premiered in Rome on January 14, 1900.31