Jack's Mannequin

'Jack's Mannequin' is an American rock band formed in 2004, originally hailing from Orange County, California. The band began as a side project of Something Corporate frontman Andrew McMahon, and comprises guitarist Bobby Anderson, bassist Jonathan Sullivan and drummer Jay McMillan.

In June 2005, McMahon was diagnosed with acute lymphoblastic leukemia (ALL), just months before the release of Jack's Mannequin's debut studio album. They released the album, Everything in Transit, in August 2005. The album peaked at number 37 on the Billboard 200. McMahon made a full recovery and the band a return to touring. They released The Glass Passenger after a series of delays in 2009, it sold 49,000 copies in its first week and peaked at number 8 on the Billboard 200. "The Resolution" was released as the first single and charted at number 27 on the Hot Modern Rock Tracks chart.

From Wikipedia