José Plácido Domingo Embil is a Spanish opera singer, conductor, and arts administrator. He has recorded over a hundred complete operas and is well known for his versatility, regularly performing in Italian, French, German, Spanish, English and Russian in the most prestigious opera houses in the world. Although primarily a lirico-spinto tenor for most of his career, especially popular for his Cavaradossi, Hoffmann, Don José and Canio, he quickly moved into more dramatic roles, becoming the most acclaimed Otello of his generation. In the early 2010s, he transitioned from the tenor repertory into exclusively baritone parts, most notably Simon Boccanegra. As of 2020, he has performed 151 different roles.

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. The work, based on Victorien Sardou's 1887 French-language dramatic play, La Tosca, is a melodramatic piece set in Rome in June 1800, with the Kingdom of Naples's control of Rome threatened by Napoleon's invasion of Italy. It contains depictions of torture, murder, and suicide, as well as some of Puccini's best-known lyrical arias.