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. His album, Everything in Transit, was received with positive response by fans and critics. They are currently signed to Sire Records.

Jack’s Mannequin is the solo project of Andrew McMahon who is also the vocalist , pianist and main songwriter of the band Something Corporate . The name Jack’s Mannequin originated from one of McMahon’s songs called Dear Jack , which was written about a friend of his whose brother was diagnosed with childhood leukemia. Andrew himself was diagnosed with leukemia on June 1, 2005 and cancelled a show for the first time ever when he received the call from his doctor. The initial impulse behind