For their next project they aimed to find something that " felt unfamiliar " . Reznor told Deadline Hollywood " What lured us in was the challenge of seeing if we could try to color outside the lines a little bit of what music might be expected to do in a picture like that . " As part of the research for the soundtrack the two were given access to previously unreleased FBI files surrounding the events of the Boston Marathon bombing that the film was based on
Boston Marathon bombing
Boston Marathon bombing
Patriots Day (soundtrack)