Il trovatore (The Troubadour) is an opera in four acts by Giuseppe Verdi to an Italian libretto by Salvadore Cammarano, based on the play El Trovador (1836) by Antonio García Gutiérrez. Cammarano died in mid-1852 before completing the libretto. This gave the composer the opportunity to propose significant revisions, which were accomplished under his direction by the young librettist Leone Emanuele Bardare, and they are seen largely in the expansion of the role of Leonora.