Panic! at the Disco is a Grammy-nominated rock band formed in Las Vegas, Nevada in 2004. The band comprises vocalist, guitarist and pianist Brendon Urie and drummer Spencer Smith. In July 2009, guitarist Ryan Ross and bassist Jon Walker left the band, citing creative differences as the reason for their departure. They have since formed a new band, The Young Veins.
Panic! at the Disco's debut album, A Fever You Can't Sweat Out, reached number 13 on the United States Billboard 200 and has sold over 2.2 million copies worldwide since its September 2005 release. The band's second album, Pretty. Odd., was released on March 25, 2008 and debuted at number 2 in the US.
The band will release their third album, entitled Vices & Virtues, on March 29, 2011, while the record's first single, "The Ballad of Mona Lisa", was released February 1, 2011.