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?
La gazza ladra La gazza ladra (] , The Thieving Magpie) is a "melodramma" or opera semiseria in two acts by Gioachino Rossini, with a libretto by Giovanni Gherardini based on "La pie voleuse" by Théodore Baudouin d'Aubigny and Louis-Charles Caigniez.
Rodrigo (opera) Rodrigo (HWV 5) is an opera in three acts composed by George Frideric Handel. Its original title was "Vincer se stesso è la maggior vittoria" ("To overcome oneself is the greater victory"). The opera is based on the historical figure of Rodrigo, the last Visigothic king of Spain. The libretto was based on Francesco Silvani's "II duello d'Amore e di Vendetta" ("The conflict between love and revenge"). Dating from 1707, it was Handel's first opera written for performance in Italy, and the first performance took place in Florence late in 1707.