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HorrorSound is a boutique sound design label and sample pack developer, delivering state-of-the-art horror sound effects for big-screen trailers, soundtracks, and video game audio projects.
HorrorSound.org is run by sound designer and trailer composer Alessandro Romeo, whose credits span AAA movie trailers and TV spots for titles such as Alien: Romulus, The Exorcist: Believer, Hereditary, The Nun, Candyman, Alien: Covenant, and many more.
https://www.horrorsound.org/
SENTINEL is a cinematic sound library crafted by French sound designer Julien Caraz, known for his raw, visceral approach to audio storytelling. Created exclusively for HorrorSound, this collection is a deep dive into organic sonics, stylized textures, and hybrid cinematic intensity.
Built for composers, trailer editors and sound designers, music producers working in film, TV, video games, and dark audio environments, SENTINEL delivers cutting-edge audio assets that push the boundaries of traditional sound libraries.
At the core of SENTINEL is a versatile collection of pulsing, tempo-synced loops, clearly labeled with BPM and key information. These elements are purpose-built to provide the foundation of your cues—delivering tension, momentum, and a sense of narrative progression with ease.
What’s Inside
Over 750 high-quality WAV sounds, broken down into:
430 Loops
Fully stemmed and mixed for maximum flexibility
BPM + Key labeled
Rhythmic beds, pulsing grooves, evolving patterns
320 One-Shots
Braams
Impacts & Hits
Drones & Abstract Textures
Risers
Signature Sounds
Designed For
Film & Game Sound Design
Horror, Thriller & Sci-Fi Scores
Trailer Music Production
Ambient & Experimental Music
Audio Post & Immersive Installations
Available in three separate versions:
Complete – 750+ sounds $99
Loops Only – 430 sounds $69
One-Shots Only – 327 sounds $49
100 Crescendo Sound Effects of Swarming Bees & Twisted Strings. Welcome to the Swarm.
HIVE STRINGS is a brutal hybrid sound pack that fuses the relentless buzz of real bee swarms with the chaotic rise of detuned string crescendos.
The result? A collection of 100 exclusive sound effects that feel alive, dangerous and on the verge of snapping.
Inside the Hive:
100 High-Quality, Royalty-Free WAV Files
Bee Crescendos – swarming, layered, unpredictable
Buzzing Strings – warped, dissonant, cinematic
Designed for layering or standalone impact
Useful for:
Horror & Thriller Trailers
Dark Sound Design Projects
Creepy Ambient Scores
Experimental Music & Audio Art
Game Audio – Monsters, Madness & Movement
Designed by Alessandro Romeo for HorrorSound, HIVE STRINGS is a fresh entry into the world of tension-based sound design. Raw. Unhinged. Not available anywhere else.
PIANO FX is an extensive selection of 500 meticulously recorded and processed WAV files, focusing on dissonance, tension, and impact. Designed to enhance horror, thriller, and suspense-driven soundscapes, this collection explores the piano’s raw and expressive potential beyond traditional harmonic structures.
Core Features:
• Music Box & Toy Piano FX – Fragile, eerie, and detuned textures, perfect for unsettling childlike melodies and psychological tension.
• Piano Clusters (Low & Mid-Range) – Dense, resonant note groupings that generate deep, evolving tension.
• Trilling Piano Strings – Agitated, unstable textures that enhance sonic dissonance.
• Reverse Piano FX – Eerie, unnatural swells for cinematic buildups and unsettling transitions.
• Piano Stingers – Sharp, high-impact tonal strikes for dramatic punctuations.
• Hits & Impacts – Processed percussive piano effects designed for weight and depth.
• Phantom Note Strikes – Isolated, haunting resonances that evoke spectral presence.
Each sound has been carefully recorded, processed, and designed by sound designer Alessandro Romeo to integrate seamlessly into modern trailer music, film scoring, and experimental sound design. The toolkit provides a versatile foundation for composers looking to push the boundaries of cinematic tension, offering a balance of organic rawness and designed precision.
HorrorSound’s Deep Tock is a unique collection combining two sample packs in one, offering a dynamic selection of stylized clock loops and signature sonic elements.
The Signature section boasts 145 modern horror abstracts and unsettling tones. These tormented and unique bleeps perfectly punctuate modern horror trailers and scores.
Featuring: Twisted Vocals, Signals, Alarms, Bursts, Processed Toy Piano and Glissato Strings.
The clock loops are organized into 8 folders, featuring over 270 tempo-synced loops from 60 to 140 BPM. Spanning classic to experimental, you’ll find everything from ticking mechanisms to haunting chimes and plucks. These incredibly realistic and pristine loops are ready for action horror trailers and suspense underscores.
PORTAL offers a comprehensive collection of 540 meticulously crafted and authentic door sound effects, ranging from the creak of wooden door to the thunderous slam of a heavy metal gate. This extensive library includes both source recordings at 192kHz and creatively designed sound effects at 48kHz, providing you with the flexibility to craft intricate soundscapes for a wide range of projects. Whether you need subtle creaks, explosive slams, or anything in between, PORTAL has you covered.
From the gentle click of a latch to the forceful kick of a heavy door, PORTAL offers a diverse range of sounds, each with its own unique character. With detailed recordings of old wooden doors, metal gates, deep “dungeon” metal door, high pitch squeaking wire-netting gate, heavy church gate, you can add depth and realism to your audio projects.
Whether you’re creating horror sound design and obscure soundtracks, a historical drama or a futuristic sci-fi adventure, PORTAL’s extensive sound library has the perfect sound for your needs.
With extreme low-end depth and sonic clarity, BOOM features 130 boom sound effects spanning from abstract, resonant tones to signature, impactful hits, offering full coverage of the low-end spectrum.
The range spans from dark, obscure tones to low-end booms layered with signature sounds, degraded low-end textures and long tails of bass frequencies. All sounds are labeled with key information.
For cinematic projects and a variety of media where low-end sound is key, BOOM is a valuable addition to your sonic palette, delivering bold, atmospheric depth and precision to your audio.
Create dramatic tension, immersive environments and impactful sound design.
OPERA NERA is a collection of demons and witches vocalizations, grotesque and terrifying horror vocal sound effects for use in scenes involving demonic rituals, paranormal events, satanic worship and ancient chants.
Give your projects a demonic twist with these frightening and evil sounds. Coming with 140 Wav sounds, half dry and half designed, filled of uneasy terror and satanic narrative.
OPERA NERA has been recorded with male and female theater actors, who interpreted every nuance of desperate cry, sobbing, satanic and witches’ laughs, mad vocalization and breathes, ghost sound effects and more.
Unique and unsettling sound effects for various creative projects where “other than ordinary” is required. For soundtracks and trailer sound design to add a touch of madness.
Chaotic precision and intensity, crafted for maximum impact. DESERT TRASH brings 170 WAV sounds to the table, ranging from subtle signatures and call-response elements to brutal, hard-hitting sound design.
From intimate signature sounds perfect for intros to brutal bursts and head-spinning tones, these samples combine modern design with rich tonal complexity.
For sci-fi futuristic trailers, otherworldly atmospheres, and when you need dramatic accents or want to add extra punch to your arrangements, DESERT TRASH has you covered.
Each sound is crafted for maximum impact and ease of use and ready to add an alien tone to your projects with no further processing required.
Signature Sound Collection
Explore the hidden sonic beauty of metals with HORROR METALS, an exclusive sound pack offering over 180 signature sound design elements.
Add elegance to your music with sharp metal tones and crystalline atmospheres, perfect for a wide range of projects from scoring and trailers to production music.
HORROR METALS is designed for creative sound design, offering a rich sound palette to produce unprecedented sonic results with ease.
Expand the timbre of your horror violins and cellos with CIRCUS, a sinister sample pack featuring 180 WAV sounds of screeching or high-pitched string noises, perfect for horror music and dark sound design.
This collection offers a curated selection of screeches, high-tension tremolo, heavy jeté strokes, dark demonic textures, finger patterns, chaotic string elements, clock loops and bow accents.
Create haunting atmospheres, perfect for horror, thriller or experimental soundtracks. Every element has been designed to unsettle and disturb, blurring the line between music and noise.
With A Sound Effect, Asbjoern has created a web site where our international community can browse, learn, and share the vast fruits of our labors. Together we are accelerating the very real potential power of sound design as a recognized art form.
A Sound Effect is an excellent resource for us to keep our animated films sounding unique and exciting.
A Sound Effect is a great asset to have discovered.
We found the site very easy to navigate, purchasing and downloads were effortless and the effects themselves are awesome! Asbjoern has done us all a great service.
We’ll definitely be back!
There are many great independent sound effect libraries available these days. The main problem with having so many, is keeping track of them!
A Sound Effect is a great hub, and is one of the first places I visit to look for sounds by category or genre. I started coming here to see if I could find libraries that I knew I had heard, but forgot WHERE I had heard them.
And in the process discovered libraries I never would have found otherwise. Great work! Keep it up!
We're always looking for new sounds to mangle, so when A Sound Effect had a holiday sale, I tried them out.
The purchase experience is really smooth and quick, and delivery is almost instant.
I'll definitely come back to them again in the future!
A Sound Effect is a wonderful resource for indie sound effects libraries. On top of that, it has some of the finest sound design, film and game audio interviews!
I often need very specific types of sounds so I've become a big supporter of independent recorders.
Until now I've always had to go to their individual websites. Now I can find them all in one place.
And, Asbjoern is great to work with!
A Sound Effect is a well curated boutique sound effects shop and a great place to find industry interviews and learning resources.