How Music Becomes Terror: The Soundtrack of Our Nightmares

It's October, which means it's time to talk about the things that scare us.

I'm not here to dissect jump scares or debate which Halloween sequel holds up best (it's Halloween II, fight me). I want to talk about something more fundamental to horror: the music.

You can peek through your fingers at the monster, you can squeeze your eyes shut during the gore, but you can't escape the soundtrack. It crawls under your skin. It tells your nervous system that something is wrong before your brain consciously registers the threat.

Music doesn't just accompany horror. It creates it.

The Heartbeat That Warns You

Think about the first time you heard the Jaws theme.

Two notes. That's it. E and F, half a step apart, played in alternating sequence on a low string instrument.

Dun-dun. Dun-dun. Dun-dun-dun-dun-dun-dun.

John Williams didn't compose a melody. He composed a heartbeat—your heartbeat, when you realize something is hunting you. The tempo increases as the shark approaches, mimicking your rising panic. It's primal. Relentless. Inevitable.

Even now, decades later, you can play those two notes on a piano in a room full of people and watch every single person tense up. That's the power of a well-crafted horror score.

When Music Becomes the Monster

Some horror scores don't just set the mood—they are the horror.

Take John Carpenter's Halloween theme. Written on a Moog synthesizer in 5/4 time (an unusual, slightly off-kilter rhythm that makes you feel like something's wrong even if you don't know why), it's minimal, repetitive, and absolutely hypnotic. The main melody sounds like it's running—escaping—but the rhythm underneath is steady, mechanical, unstoppable.

That's Michael Myers. He doesn't run, he walks. And he never stops.

Consider the iconic score to The Exorcist. Mike Oldfield's "Tubular Bells" wasn't written for the film—it was an existing progressive rock piece—but director William Friedkin chose it specifically because its innocent, almost childlike melody becomes increasingly disturbing the longer it plays. It's the sound of corruption; something pure being twisted into something wrong.

The most terrifying part about it is it's beautiful. You want to keep listening, even as your skin crawls.

The Instruments That Haunt Us

Horror composers understand that certain instruments—and certain ways of playing them—trigger instinctive fear responses.

Low strings (cello, bass): Played slowly, they mimic growls, footsteps, rumbling. They're the sounds of something large and dangerous approaching. Think of the opening of The Shining—those low, droning strings that accompany the aerial shots of the isolated hotel. You haven't seen anything scary yet, but your body already knows: this place is wrong.

High strings (violin, viola): When bowed at extreme pitch or played tremolo (rapid back-and-forth bowing), they sound like screaming. Bernard Herrmann's Psycho shower scene is the masterclass here—violins shrieking in sharp, stabbing bursts that mirror the knife. No melody. Just pure sonic violence.

Dissonance: Notes that clash, that refuse to resolve into harmony, create psychological discomfort. Your brain wants resolution. When it doesn't get it, anxiety builds. Krzysztof Penderecki's "Polymorphia" (used in The Shining) is almost entirely atonal—a wall of sound that feels like reality itself is fracturing.

Silence: Sometimes, the scariest thing is the absence of sound. When the music suddenly cuts out, your brain goes into hyperalert mode; it recognizes something primal in the complete cessation of birds chirping, woodland creatures chattering. It knows that something is lurking in the shadows, watching you. Silence is its own kind of tension.

The Songs That Shouldn't Be Scary (But Are)

Then there's the horror of juxtaposition—taking something familiar, even comforting, and warping it into nightmare fuel.

I still can't hear "Jeepers Creepers" without a full-body shudder. Written in 1938 by Harry Warren and Johnny Mercer, it was a playful, jazzy tune about being smitten—"Jeepers Creepers, where'd you get those peepers?" Cute, right?

Until the 2001 film Jeepers Creepers turned it into the calling card of a demon that hunts humans every 23 years to harvest their body parts. Now it's not a love song full of courtship playfulness; it's a terrifying stalking anthem. Because it's so upbeat, so innocuous, it creates this horrifying cognitive dissonance: your ears hear something cheerful while your brain screams run.

That's genius-level horror.

Take the "1, 2, Freddy's Coming for You" song from A Nightmare on Elm Street. It's a children's jump-rope rhyme, sung in a little girl's voice. If you weren’t listening to the words, you might mistake it for something as innocent as “Oh Jolly Playmate.” Children’s rhymes are supposed to be safe, innocent, comforting.

But this one isn’t that at all; it's a warning. It tells you exactly what's going to happen, in sing-song cadence, and there's nothing you can do to stop it. The playfulness makes it worse. It's the sound of impending, inevitable doom.

The Score That Still Haunts Me

I was maybe nine or ten years old when I saw The Entity on cable—way too young, but I was a latchkey kid with unsupervised TV access and I had a thing for horror movies (still do).

The movie itself was disturbing enough (a woman being repeatedly attacked by an invisible force), but the score? That's what gave me nightmares for months.

Composer Charles Bernstein created this insistent, alarm-like pulse—synthetic, mechanical, rising in pitch and intensity. It sounds like a warning siren that won't shut off. Like your nervous system has been hijacked and is screaming at you to flee, but there's nowhere to go.

It wasn't subtle or atmospheric, it was aggressive. The music itself felt like an attack.

I haven't seen that movie in over thirty years, but I can still hear that score in my head. That's how deep horror music can burrow.

Music as Foreshadowing

Here's what horror soundtracks understand that other genres sometimes don't: music can tell the audience things the characters don't know yet.

In Jaws, the shark theme plays before anyone on screen realizes there's danger. The audience knows. We're screaming at the characters to get out of the water, but they can't hear the music, only we can.

That's dramatic irony at its finest; the score makes us complicit. We're watching the horror unfold from a position of terrible knowledge.

In slasher films, the music often shifts right before the killer appears—even if the character on screen hasn't noticed yet. A subtle key change. A low drone underneath the scene. The music is saying: he's here, he's close, you're not safe.

It's not spoiling the scare. It's building it. Knowing something bad is about to happen is often scarier than the actual jump scare itself.

Why Music Sticks With Us

Visual horror fades because you can rationalize it away. "It's just makeup. It's just special effects. It's not real."

Music, on the other hand, bypasses your rational brain; it speaks directly to your nervous system. It triggers emotional and physiological responses you can't control. Elevated heart rate. Shallow breathing. Muscle tension. The fight-or-flight response.

Once a piece of music is associated with fear in your brain, it's almost impossible to unlearn that connection.

I can watch Jaws now and appreciate the filmmaking, but those two notes still make me uneasy.

Setting the Mood in Stories

Music doesn't just set the mood in films—it does the same thing in literature when wielded intentionally.

In The Strangest of Places, every chapter is titled with a song that reflects the emotional tone of what's about to unfold. Sometimes it's explicit, sometimes it's atmospheric, and sometimes it's ironic.

It's not the same as a horror film score, obviously—Autumn's story isn't about monsters stalking her through the night—but the principle is the same: music signals what’s happening in its associated scene. It prepares the reader emotionally, creating resonance.

If you know the songs, they can become part of the memory of the story—just like a great film score.

Since creating the playlists that associate with Autumn’s story, I now can’t hear those songs without thinking of her and what was going on in her life during that scene.

The Playlist of Dread

Here's my challenge for you this October: Pay attention to the music in the next horror movie you watch.

Notice when it swells and when it cuts out. See if you can determine what instruments are used during tense scenes versus jump scares. Listen to how the tempo changes when the danger increases. Watch a horror scene with the sound off, then watch it again with the music on.

I promise you, the version with music will be exponentially more terrifying. Your brain knows that the monster on screen is just a guy in a mask.

But the music is another story; it gets inside you…and it doesn't leave.