Instagram/Andrew McMahon & Billy Jo Music Andrew McMahon fulfills a lifelong dream, performing "Piano Man" at Carnegie Hall with Billy Joel watching. A tribute to his musical hero. March 17, 2026 AceShowbiz - Andrew McMahon, known as the frontman for Something Corporate and Jack's Mannequin, recently shared a milestone in his career. On March 12, he performed the iconic "Piano Man" at Carnegie Hall during The Music of Billy Joel, a tribute concert dedicated to the legendary singer-songwriter. This performance was a professional highlight, as Billy Joel himself watched from the opera box.