Alzira is the seventh work and the sixth opera to be published in the critical edition of The Works of Giuseppe Verdi . Composed during the middle of the very productive period of Verdi's first large-scale successes, Alzira premiered at Naples on August 12, 1845. Cammarano's libretto is based on a play of Voltaire, who used a real incident in sixteenth-century Peru during the Spanish conquest to shape a critique of the morality of the noble savage...