Raised on the East Coast and in the Midwest, McMahon began writing songs at age nine, drawing inspiration from singer/songwriter/pianists such as Elton John and Billy Joel. While still in high school, McMahon co-founded an early incarnation of pop-punk band Something Corporate, whose 2002 major-label debut hit No. 1 on Billboard’s Top Heatseekers Chart. In 2004, he formed Jack’s Mannequin and then—on the cusp of releasing the band’s 2005 debut—was diagnosed with leukemia at age 22. Eventually fully recovering, McMahon went on to release two more studio albums with Jack’s Mannequin, in addition to composing songs for the NBC series Smash (an endeavor that earned him an Emmy Award nomination in 2013) and established The Dear Jack Foundation one of the first Adolescent and Young Adult (AYA) specific cancer foundations which advocates for and supports initiatives that benefit AYAs diagnosed with cancer. In 2014, he released Andrew McMahon in the Wilderness which featured the gold certified single “Cecilia and the Satellite” McMahon lives in Los Angeles with his wife of 10 years Kelly and their daughter Cecilia, for whom the hit song was penned.