Barrie-James O'Neill (born 20 December 1987) is a Scottish singer and songwriter from Glasgow, Scotland. O'Neill started songwriting at the age of 14. On 1 February 2014, as the founder and frontman of the band Kassidy, O'Neill, left the band and moved to Los Angeles, he adopted the stage name "Nightmare Boy" as a solo artist. He has released two singles and an EP.[1][2] On 8 April 2016, O'Neill released his debut album Cold Coffee, which included the official singles "Angel Tears", "Way Over My Head" and "Night Burns".