I Can’t Sing! The X Factor Musical Tags: Musical.I Can’t Sing! The X Factor Musical is a musical comedy written by Harry Hill with music and additional lyrics by Steve Brown. Based on the TV series The X Factor the musical made its West End and world premiere in March 2014 at the London Palladium. author Harry Hill based on The X Factor (UK TV series) lyrics Harry Hill, Steve Brown (composer) music by Steve Brown (composer) subtitle The X Factor Musical Learn more... Loading...