ELDRITCH — Lovecraftian Horror BGM Generator for RPG Maker MZ & MV

ELDRITCH forges original cosmic-horror music — sacred dissonant choir, ritual drum processions, atonal chamber horror and funereal organ dirges, in the spirit of Lovecraftian horror scores, entirely from scratch in your browser.

Point it at a locus, shape three dials, and it composes and synthesizes an original loop with no samples and no repetition. It's a dev tool: make a track, export it, and drop it into your game. Your loops are original and yours to ship.

What makes it different

• Five fundamentally different forms, so the loci never blur: sacred Choral, a Ritual drum procession, atonal Chamber horror, a funereal organ Dirge, and minimal Whispers.
• Occult modes — locrian, octatonic, double-harmonic and harmonic minor — with clusters that grow more atonal as Eldritch rises.
• Ritual drives taiko-and-frame-drum processions; the Form selector forces Chamber / Ritual / Choral, so one locus becomes many.
• A from-scratch eldritch ensemble: dissonant choir, pipe organ, tolling bells, atonal strings, prepared piano, ritual drums and deep drones.

You're in control

• Dread — somber → unbearable (register & weight)
• Eldritch — tonal → atonal (dissonance & clusters)
• Ritual — still → frenzied (drums & chant density)
• Plus Key, Form, and Length.
• Reshuffle rolls a fresh seed — new mode, tempo, form and arc every time. The seed + sliders reproduce any piece exactly.

Ten Loci

• Vigil — sacred choral dread
• Ritual — ritual drum procession
• Elder Thing — monstrous rite
• Nightgaunt — fluttering rite
• The Abyss — atonal chamber
• Descent — sinking chamber
• Madness — atonal chaos
• Cyclopean — funereal organ dirge
• Sunken City — drowned, muffled dirge
• Whispers — minimal dread

Export & drop in

• .ogg — game-ready, with LOOPSTART / LOOPLENGTH loop tags baked in. Drop it into your project's audio/bgm/ folder and RPG Maker (MZ and MV) loops it seamlessly.
• .wav — uncompressed, for editing in a DAW.

Good to know

Runs offline in any modern browser — nothing installs, nothing uploads. A short README with full instructions is included. Built with a dissonant wordless choir, pipe organ, tolling bells, atonal string clusters, prepared/detuned piano, cello and violin, a taiko-and-frame-drum ritual ensemble, deep drones and whispering wind — all synthesized from scratch.

ELDRITCH emulates the style and techniques of Lovecraftian horror scores; it does not contain or reproduce any existing music, draws on the public-domain writings of H. P. Lovecraft, and is not affiliated with or endorsed by any studio or any rights holder.

FAQ

Is the music royalty-free? Can I use it commercially? Yes. Everything ELDRITCH exports is original and yours to use in commercial or free projects, no attribution required. A credit ("Music forged with ELDRITCH") is appreciated but optional.

Does it use samples or copyrighted audio? No. Every sound is synthesized from scratch with the Web Audio API. It never reproduces any existing track — it emulates a style.

Do the scenes actually sound different, or is it all ambient? They're built from genuinely different musical forms — sacred choral, ritual drums, atonal chamber, organ dirge and minimal whispers — so the tabs don't share one undertone. The Form selector lets you push any scene into another form too.

Will the loops loop seamlessly in RPG Maker? Yes — export the .ogg. It carries LOOPSTART/LOOPLENGTH tags MZ and MV read to loop with no gap. (The .wav has no loop tags; use it only for DAW editing.)

MZ only, or MV too? Both. They both read .ogg for BGM. Put the file in audio/bgm/.

Can I use these outside RPG Maker — another engine, a video, a stream? Yes. The .ogg/.wav are ordinary audio files; the loop tags are simply ignored by tools that don't read them.

Do I need to install anything or be online? No. It's one .html file — download it, open it in a browser, work offline.

How do I get the exact same track back later? Note the seed shown on screen and keep your slider + selector values; re-enter them for an identical render.

No sound when I open it? Click Play once. Browsers block audio until you interact with the page.

The OGG button says the encoder didn't load. Refresh and retry. Fallback: export the .wav and run ffmpeg -i track.wav -c:a libvorbis track.ogg (no loop tags that way; prefer the built-in OGG export).

Is this "AI music"? The composition and sound come from hand-written procedural DSP code — not a generative-audio AI model. The tool's code was developed with LLM assistance, which is disclosed above.