The opera-ballet Mlada was commissioned in 1872 by Stepan Gedeonov, director of the imperial theatres in St. Petersburg, Russia. Collaboratively taken on by five composers—César Cui, Modest Musorgskii, Nikolai Rimskii-Korsakov, Aleksandr Borodin, and Ludwig Minkus—it was left unfinished. Some of the music was never written or has been lost, while most of what survives exists only in short score. For the first time, the surviving original scenes and numbers of Mlada are now published in their ent...