American Psycho is a musical with music and lyrics by Duncan Sheik and a book by Roberto Aguirre-Sacasa. It is based on the controversial 1991 novel American Psycho by Bret Easton Ellis, which also inspired a 2000 film of the same name, that starred Christian Bale. Set in Manhattan during the Wall Street boom of the late 1980s, American Psycho is about the daily life of Patrick Bateman, a wealthy young investment banker who is also a serial killer.

Duncan Sheik is an American singer-songwriter, composer and actor. Sheik is known for his 1996 debut single "Barely Breathing", which earned him a Grammy Award nomination for Best Male Pop Vocal Performance. He has composed music for motion pictures and Broadway musicals, winning the 2007 Tony Awards for Best Original Score and Best Orchestrations for his work on the musical Spring Awakening.