Rossini's third opera seria for Naples, Armida, first performed November 9, 1817 and among his most unusual and beautiful stage works, is based on Tasso's epic poem Gerusalemme liberata. From the performer playing Armida, Rossini demands singing of both spectacular virtuosity and great dramatic power. Some of his most sensual music occurs in Armida's duets, two of which feature prominent introductions for solo violin and solo violoncello. Included in the large cast are six tenor roles (although they can be taken by four tenors, as they were at Naples). A highlight of Act III is the stirring trio for three tenors. Armida also requires two basses and gives conspicuous parts to men's and women's choruses. Unique among Rossini's Italian operas is a large ballet, which occupies much of Act II, and the magical scenic effects called for in the staging.

The critical edition presents Armida in its original form, reintegrating passages missing from the autograph score and restoring cuts made in printed editions.

Gioachino Rossini's Mosè in Egitto is an opera that emerged from the eighteenth- and nineteenth-century Italian tradition of oratorios written to be performed during Lent. The three-act opera draws from the Biblical book of Exodus to chronicle the story of Moses liberating the Israelites from Pharaoh's rule and guiding them out of Egypt. The librettist, Andrea Leone Tottola, also borrowed from an eighteenth-century drama to add a love affair between Pharaoh's son and an Israelite girl that motivates Pharaoh's final, fatal refusal in the opera to free the Israelites.

This critical edition presents the version performed in 1820 after Rossini had revised the unsuccessful and now lost third act of 1818. The edition includes an appendix with the original aria for Pharaoh written by Michele Carafa, which was performed throughout the nineteenth century even after Rossini replaced it with one of his own. Also featured are vocal ornamentation used in Paris performances and detailed information on the Paris productions between 1822 and 1840. This comprehensive critical edition provides a reliable source for interpretation and study of a work that Rossini called "sublime."