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 The Black Star Tour (2011). "What the Hell" is written by Lavigne, Max Martin, and Shellback, while the latter two produced the song. It was recorded at Maratone Studios in Stockholm, Sweden. This is the second song these three have written together, the first one being Miranda Cosgrove's "Dancing Crazy". On November 2010, Lavigne announced via a blog on her official website that her fourth album, "Goodbye Lullaby", had been completed for a year and cited her record company as the reason for the album's delays. She revealed in the blog that "What the Hell" would be the first single