Services · V2 · Adaptive Music

Adaptive Music

You're shipping a game or an app that needs a score which adapts to the player — with a provenance a lawyer can sign off on.

XJ is a patented, composer-authored, locally-running adaptive-music system, built for the exact moment the market started paying for audio a lawyer can sign off on. The point isn’t to out-generate anyone — it’s to own the structured, adaptive, embeddable layer: the score that never repeats, with provenance that holds up. The engine and Unreal plugin are open source and run on your hardware — your team integrates them and your composers author the possibility-spaces. What the studio sells is the license to ship music made with XJ commercially.

The offers

Commercial Embed License

Tiered by title budgetAnnual
  • Under $250k budget: free, community-support tier
  • $250k–$2M: $4,000–$8,000 per title, per year
  • Over $2M: custom; games-as-a-service billed monthly
  • Middleware-grammar pricing you can hand to procurement
  • See the full license anchors on xjmusic.com › — the canonical, up-to-date tiers

Free for indies under $250k budget — ship on the open-source engine, license up as you grow.

Ask about embed licensing ›

Patent License

Priced per dealInbound only
  • A separate track from the XJ product
  • For teams building their own generative-music systems within the patent’s claims
  • Inbound-only posture; scoped and priced per deal

For parties building generative-music systems inside U.S. 10,446,126's claims.

Open a patent inquiry ›

Proof, not adjectives

Four-chapter adaptive score, live in-engine XJ video game music Aleatory In-Game Music Engine & Demo Project View the case › Open-source C++ engine + Unreal 5 plugin XJ music Software Workstation & Engine View the case › U.S. Patent 10,446,126 — active to 2038 XJ music Patent U.S. Patent 10,446,126 View the case › Shipped XJ music Demos + Artwork Musical Proof of Concept View the case › Shipped · Press XJ music Podcast Podcast Audio Series View the case ›

See everything under this vector ›

Hear it inside a real game

A music engine should be audible. This is the Hero’s Journey demo — a four-chapter adaptive score responding to live Combat, Exploration, and Dialog states, running in a real game through XJ’s own open-source Unreal Engine 5 plugin.

The music adapts in real time while staying musically coherent — tempo, meter, and harmony hold continuous under change rather than hard-cutting between loops. See the full Hero’s Journey project, or hear every chapter on xjmusic.com ›

How it works

Licensing XJ is self-serve at the base and a conversation at the top — the studio licenses; the build and the score are yours:

  1. Adopt the engine. The runtime and the Unreal Engine plugin are open source — your team integrates XJ into your build. No engagement to book; start today.
  2. Author the score. Your composers write the possibility-spaces the engine arranges live — bring your own or a contractor. The libraries are yours, authored by your team.
  3. License to ship. The Commercial Embed License sets your terms by title budget — free under $250k, banded above. Provenance stays clean; rights are settled before you ship.
  4. Or license the patent. Building your own generative-music system inside the patent’s claims? That’s a separate, inbound-only track. Scoped and priced per deal.

Fit / not-fit

This is for you if

  • You’re shipping a systemic, roguelike, ambient-heavy, or long-session title where linear loops wear thin
  • You need continuous, non-repeating music without per-track licensing headaches
  • Your legal team asks “is your generative audio rights-clean?” and you want a good answer
  • You’d rather own an adaptive system than buy minutes of static score

We're probably not your studio if

  • You want the studio to build the integration or compose the score for you — the engine and plugin are open source and the music is yours to author; what we sell is the license
  • You want AI music that mimics a specific artist — that’s the thing XJ deliberately isn’t
  • You need a single linear track for a trailer; hire a composer for that
  • You want the cheapest possible stems and don’t care about provenance

Adaptive-music fit check

Four questions point you at the right license tier — free, banded, custom, or a call. Ranges beat false precision; skip anything that doesn't apply.

Know it's a fit already? Book a 20-minute fit call › — the highest-intent path skips the form.

Answered within one business day, by me.

Ballpark is fine — it just points us at the right tier.

Do you have a composer on the team? *
About the title (optional)
Where to reach you

Answered within one business day, by me.

No form? Send it as an email instead.

Copy the template, fill in the blanks, and send it to hi@outrightmental.com. One person reads every note and replies within one business day.

Open this in your email app ›

Just want the product and the docs? → xjmusic.com/

Questions people ask

Do you integrate XJ or compose the score for us?
No — that part is yours. XJ’s runtime and Unreal Engine plugin are open source, so your team integrates them into your build, and your composers author the possibility-spaces (bring your own or a contractor). What Outright Mental sells is the license to ship music made with XJ commercially, plus the patent license for teams building their own systems. Implementation and composition stay with you; the rights stay clean.
Who owns the music and the integration?
You own the possibility-spaces your composers author and the integration your team builds — outright. XJ’s engine and the patent stay the studio’s; the embed license is your right to ship music made with them commercially. Nothing about your game trains anything; there’s no cloud round-trip and no training-data exposure.
Is this AI music?
No. XJ is a rules-based, composer-authored adaptive-score system with a granted U.S. patent (10,446,126). The libraries are written by composers; the engine arranges them live. We never market it as AI music, because it isn’t.
How do we get started?
Start with the open source — the engine and Unreal plugin are public, so your team can integrate and prototype today. When you’re ready to ship commercially, the Commercial Embed License sets your terms by title budget (free under $250k). Inbound licensing goes to licensing@xjmusic.com.
Where are the full license terms and anchors?
xjmusic.com/license is the canonical, up-to-date source — the product face carries the license page so the tiers never drift between two places. The bands above are a summary; the anchors there are what a procurement team should reference. Inbound licensing goes to licensing@xjmusic.com.