Andrew Ross McMahon (born September 3, 1982) is a singer/songwriter . He was the vocalist, pianist and primary lyricist for the bands Something Corporate and main songwriter for Jack's Mannequin and performs solo both under his own name as well as his moniker, Andrew McMahon in the Wilderness. On April 30, 2013, he debuted his first solo work, an EP titled The Pop Underground , which was followed by his debut album Andrew McMahon in the Wilderness , released on October 14, 2014. His second solo album, Zombies on Broadway , was released on February 10, 2017.