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
What the Hell third week for sales of 35,000 copies, and in its sixth week, it has been certified Platinum for sales over 70,000 copies, and has been certified 2x Platinum in its 16th week, for sales over 140,000. "What the Hell" has been placed No. 1 in list of biggest hits of 2011 in Japan. With shipments, "What the Hell" sold an estimated 2 million copies in Asia. Even though it missed the top spot in Japan, it is the best selling Western single of 2011 there. It has sold more than 6 million copies worldwide, making it her second best selling