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
Pluto Water sulfate, which are known as natural laxatives. The water also contains a number of other minerals, most notably lithium salts. Sales of Pluto water was halted in 1971 when lithium became a controlled substance. Advertised as "America's Laxative", Pluto Water used the slogan "When Nature Won't, PLUTO Will". The bottle and many advertisements featured an image of Pluto, the Roman god of the underworld, reflecting the water's underground origin. Pluto Water Pluto Water was a trademark for a strongly laxative natural water product which was very popular in the United States in the early 20th century. The water's laxative properties