"Ero s onoga svijeta" is a popular Croatian operetta written by Jakov Gotovac in 1935. The story is set in a mythical land and follows the adventures of a character named Ero, who is a charming and mischievous figure. The operetta combines elements of humor, romance, and folklore, showcasing the rich cultural heritage of Croatia. The operetta features lively music and engaging characters, making it a beloved piece in Croatian theater. It often highlights themes of love, identity, and the clash between tradition and modernity, resonating with audiences both in Croatia and beyond.