Die zwei Brüder
I Rantzau ("The Rantzau Family") is an opera in four acts by Pietro Mascagni (1892), based on a libretto by Guido Menasci and Giovanni Targioni-Tozzetti, based on the play "Les Rantzau" (1873) by French writers Erckmann and Chatrian, after their novel (1882) "Les Deux Frères" ("The Two Brothers").