Jack's Mannequin is a piano rock band from Orange County, California. A side project of Andrew McMahon, originally from Something Corporate the band was formed in 2004 and released their first album in August 2005. In June of that year, McMahon was diagnosed with acute lymphoblastic leukemia, but made a full recovery. Both of the band's albums, Everything in Transit and The Glass Passenger, have been received well by both fans and critics alike. They are currently signed to Sire Records.