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 late stage acute lymphoblastic leukemia, but made a full recovery. Their album, Everything in Transit, was received with positive response by fans and critics. They are currently signed to Sire Records. The Glass Passenger is the upcoming second studio album by American rock band Jack's Mannequin, set to be released by Sire Records on 30 September 2008 in the United States.