Ivanhoé is an 1826 pastiche opera in three acts with music by Gioachino Rossini, the  music was adapted, with the composer's permission, by the music-publisher Antonio Pacini from Rossini's operas, namely La gazza ladra, is a "melodramma" or opera semiseria in two acts by Gioachino Rossini, with a libretto by who?
Ivanhoé Ivanhoé is an 1826 pastiche opera in three acts with music by Gioachino Rossini to a French-language libretto by Émile Deschamps and Gabriel-Gustave de Wailly, after Walter Scott's novel of the same name. The music was adapted, with the composer's permission, by the music-publisher Antonio Pacini from Rossini's operas, namely "Semiramide", "La Cenerentola", "La gazza ladra", and "Tancredi" in order to introduce his music to Paris. An examination of the score shows that Pacini also used music from "Bianca e Faliero", "Armida", "Maometto II", "Aureliano in Palmira", "Sigismondo", "Torvaldo e Dorliska", "Mosè in Egitto" and an amount of newly composed music including fanfares and the gallop that was later to become famous from its inclusion in "Guglielmo Tell". The work was premiered on 15 September 1826, at the Odéon Theatre.
Elena da Feltre Elena da Feltre is an opera in three acts by 19th-century Italian composer Saverio Mercadante from a libretto by Salvatore Cammarano, well known as librettist of Donizetti's "Lucia di Lammermoor" and Verdi's "Il trovatore". The premiere took place at the Teatro San Carlo in Naples on 1 January 1839 as part of the Carnival Season. While not successful at the time, the opera was revived at La Scala in 1843 with twenty performances.