Based on the French play Juliette, ou La clé des songes (Juliette, or The Key of Dreams) by Georges Neveux, Martinů’s operatic masterpiece Julietta explores the intersection of dreams and reality. Set in a seaside town, this psychological drama follows Michel, a traveling salesman, who finds himself in search of a mysterious girl whose voice he has been hearing for more than three years. In love with Julietta and realizing he is caught in a dream world, he must decide—should he stay in the dream or wake up?