Andrew McMahon is a singer/songwriter. He was the vocalist, pianist and primary songwriter for the bands Something Corporate and Jack's Mannequin; and performs solo.
McMahon started playing the piano at age 8. The following year, he began performing piano solos before he could even read music. In an interview, McMahon states "my mother was a good player and I started playing by ear. After a year of that, I began writing songs, and found outlets to perform them at school assemblies. Eventually, I got lessons."
McMahon started his first band, Left Here, with his high school friends and future Something Corporate bandmates Kevin "Clutch" Page on bass and Brian Ireland on drums in 1997. Even though they won a local battle of the bands competition, they soon broke up. McMahon went on to record the self-released eponymous four-track demo CD Andrew McMahon with the aid of several friends of his, including guitarist Josh Partington, whom he had met his sophomore year in high school. Joined by rhythm guitarist Reuben Hernandez (who was later replaced by William Tell), the quintet formed the piano rock band Something Corporate in 1998.