Soundtrack featuring original music by fictional band The Relentless. Palaye Royale vocalist Remington Leith didn't have to think twice about getting involved in 'American Satan', the 2017 movie starring Andy Biersack, Asking Alexandria's Ben Bruce, Denise Richards and Malcolm McDowell. And while Biersack is acting as the film's rockstar protagonist, Johnny Faust, it's Leith's voice you'll hear when Faust's band, The Relentless, perform their music.