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
Gate deities of the underworld Gate deities of the underworld The Gate deities of the underworld were ancient Egyptian minor deities charged with guarding the gates of the Egyptian underworld. The Egyptians believed that in the netherworld, the Duat, there were various gates, doors and pylons crossed every night by the solar boat (Atet) of the sun-god Ra and by the souls directed to the world of the dead. Ancient funerary texts provide many different descriptions of the afterlife gates. Sometimes more than 1,000 guardian deities are listed. According to a more general view, every gate was guarded by a minor god who allowed access