Are Norma and Idomeneo both operas by Bellini?
Norma (opera) Norma (] ) is a "tragedia lirica" or opera in two acts by Vincenzo Bellini with libretto by Felice Romani after "Norma, ou L'infanticide" ("Norma, or The Infanticide") by Alexandre Soumet. It was first produced at La Scala in Milan on 26 December 1831.
Gloria (opera) Gloria is a tragic opera in three acts by Francesco Cilea with an Italian libretto by Arturo Colautti. A variation on the Romeo and Juliet story and set in 14th century Siena, the libretto is based on Victorien Sardou's 1874 play "La Haine" ("Hatred"). The opera premiered on 15 April 1907 at La Scala conducted by Arturo Toscanini with Salomea Krusceniski in the title role. "Gloria" was a failure at its premiere when it was withdrawn after two performances and fared little better in the 1932 revised version, although there have been two late 20th century revivals. It proved to be Cilea's last staged opera. In the 43 years following the premiere of "Gloria" he worked on two or three further operas which were never performed and continued to compose chamber and orchestral music.