US artist Disasterpeace created the soundtrack to the 2014 horror movie It Follows. The Music - free to listen on BandCamp - is an elementary part for evoking a constant feeling of dread throughout the movie.
Both movie and soundtrack are heartily recommended. You can find the movie on various streaming services. It may look like a teen movie at first glance, but I assure you that a second glance is worth it (unless you hate horror flicks in general).