A particular opera is by a Italian composer who was not Der Barbier von Bagdad. This opera was written by Nicolas-Franois Guillard. The first composer also composed "Orfeo ed Euridice".
Iphignie en Tauride ("Iphigenia in Tauris") is a 1779 opera by Christoph Willibald Gluck in four acts. 
Der Barbier von Bagdad ("The Barber of Baghdad") is a comic opera in two acts by Peter Cornelius to a German libretto by the composer, based on "The Tale of the Tailor" and "The Barbers Stories of his Six Brothers" in "One Thousand and One Nights". 
 His most famous work is "Iphignie en Tauride", his first libretto, set by Gluck after the composer had initially rejected it. 
Orfeo ed Euridice (French version: Orphe et Eurydice ; English: "Orpheus and Eurydice") is an opera composed by Christoph Willibald Gluck based on the myth of Orpheus, set to a libretto by Ranieri de' Calzabigi. 
