Which opera premiered first, Julietta or La favorite?
Julietta:  A libretto in Czech was later prepared for its 1938 premiere, and it has become widely considered as Martinů's masterpiece. La favorite: La Favorite (The Favourite, sometimes referred to by its Italian title: La favorita) is a grand opera in four acts by Gaetano Donizetti to a French-language libretto by Alphonse Royer and Gustave Vaëz, based on the play "Le comte de Comminges" by Baculard d'Arnaud.
i don't know