American musician, producer, and composer for film, television, and video game scores. Much of his work is in the action and horror film genres, with films like Dawn of the Dead, 300, Sucker Punch, and the John Wick franchise. He has collaborated with directors like Zack Snyder, Rob Zombie, Neil Marshall, William Friedkin, Scott Derrickson, James Gunn, Chad Stahelski and David Leitch. With Gunn, he has scored every one of the director's films; including Guardians of the Galaxy, which became one of the highest grossing domestic films of 2014, and its 2017 sequel. In addition, he is also the former lead guitarist of the American rock band Marilyn Manson, and produced its albums The Pale Emperor and Heaven Upside Down.