Iphignie en Tauride is an opera by Christoph Willibald Gluck, not Der Barbier von Bagdad.
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". 
