Tosca is an opera in three acts by Giacomo Puccini to an Italian libretto by Luigi Illica and Giuseppe Giacosa. It premiered at the Teatro Costanzi in Rome on 14 January 1900. This version is conducted by Riccardo Muti at La Scala, Milan.

Madrid's legendary Teatro Real staged this production of Giacomo Puccini's seminal opera La Bohème, starring Inva Mula, Aquiles Machado and Jesús López Cobos in the principal roles. Giancarlo del Monaco directed for the stage, Michael Scott designed the sets and costumes, and The Chorus and Orchestra of the Teatro Real provide musical accompaniment.

Opera is an inherently theatrical medium that does not lend itself readily to the realism of film treatment. The shining exception is Puccini's Tosca, an action-packed melodrama that unfolds in three taut and gripping acts like the meatiest of Hollywood films noir. And unlike most operas, these three acts are set in three very specific Roman locales. Thus this 1976 film takes place in the church of Sant'Andrea della Valle (Act 1), the Palazzo Farnese (Act 2), and the Castel Sant'Angelo (Act 3).