Panic! at the Disco, known as Panic at the Disco between 2008 and 2009, is a Grammy-nominated rock band formed in Las Vegas, Nevada in 2004. The band comprises vocalist and guitarist 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 depature. They have since formed a new band, entitled 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.