Pluto (mythology) designed a set with a rotating mountain that opened up to reveal Pluto emerging from the underworld; the drawing survives and was the basis for a modern recreation. The tragic descent of the hero-musician Orpheus to the underworld to retrieve his bride, and his performance at the court of Pluto and Proserpina, offered compelling material for librettists and composers of opera (see List of Orphean operas) and ballet. Pluto also appears in works based on other classical myths of the underworld. As a singing role, Pluto is almost always written for a bass voice, with the low vocal range representing
A Supplement to the Journey to the West because he cannot pass the imperial exams. After a bout of drinking, Humu writes a series of poems criticizing heaven for not punishing the wicked and states he would torture Qin Hui for the murder of Yue Fei if he was the king of hell. For his irreverent remarks, Humu's soul is dragged to the Chinese underworld of "Diyu". There, King Yama orders an underworld official to take Humu on a tour of the various tortures of hell in order to witness firsthand the result of karmic retribution. The two first come to Qin Hui's personal hell where his punishments