An instrument called a Waterphone makes the creepy noises you hear in horror movies.

We’d never even heard of this instrument before, but you hear it in every horror movie.  It’s called a waterphone, and it’s basically a metal plate with a bunch of small, metal poles jutting up from it.

Each pole is a note, and they make different creepy sounds depending on what you play it with.  There’s a video where someone makes one sound by hitting it with a mallet.  Then it makes a completely different sound when they use a violin bow.