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 into its chorus to great effect, making its slight refrain of "All my life I've been good/But now I'm thinking 'what the hell'" sound more massive than it probably should". Andy Greenwald from Entertainment Weekly was almost neutral in his review, but admitted that the "Farfisa-fueled "What the Hell" [will] restore Avril to her rightful place ahead of Katy Perry and Ke$ha in the Sisterhood of the Negligible Pants". Stephen Thomas Erlewine from Allmusic picked the track as one of the best of the album: What the Hell' approximates Avril's irrepressible brattiness only without seeming much fun at all". "What