T.H.I.R.I.

PRODUCTS, ACCESS & 5-YEAR ROADMAP · 2026 TO 2030

What we are building, how you access it today, and where it is going.

Every surface in the THIRI ecosystem runs on the same deterministic harmony engine. Some are shipping now, some are in public beta, some run free in your browser, and some live in our repositories. Pick your lane below to go straight to the right door.

01 · I Build Agents or Code

API Keys, MCP & Builder Skills

Wire deterministic chord analysis, voice-led voicings, reharmonization, and the 24-rule /thiri referee into Claude Code, Cursor, or your own app.

Result: Mint an instant API key (1,000 calls/mo) + get the 6-page Get Started PDF.
Mint your key at build.thiri.ai/keys →
02 · I Score AI Video / Film

FYLLM Studio & Autopilot

Score picture cuts locally on your Mac with Csound, your own sample libraries, and a per-stem VERIFY.md harmonic audit, or automate agent reels.

Result: Get the free 6-Prompt Playbook or unlock the FYLLM Suite & private repo.
Start at bluesprincemedia.com/fyllm →
03 · I Produce in a DAW

THIRI VST3/AU & DAW MCP

Run five formant-preserved voices inside Ableton Live 11 (macOS VST3 + AU) or join the Producers MCP Skill Pack waitlist (Splice + Ableton + THIRI).

Result: Receive a macOS beta installer key or reserve your spot on the DAW list.
Go to Public Beta & Waitlists →
04 · I Play, Sing or Teach

Free Browser Instruments

Sing into CORIS, shed changes on Run the Changes, sketch in Composer C, or explore 155 studio one-shots in Sound Corpus 3D with zero install.

Result: Play live in your browser immediately or download the Educator Prompt Pack.
Open the browser instruments →

01 · AVAILABLE RIGHT NOW (SELF-SERVE ACCESS, DOWNLOADS & LICENSING)

Shipping today with immediate access.

Three lines are live right now: API & MCP tiers on build.thiri.ai/keys, the FYLLM film-scoring suite and social automation pack on bluesprincemedia.com/fyllm, and embedded C++20 OEM licensing.

Available Now · build.thiri.ai/keys

THIRI API, Developer Skills & MCP Licence

Five deterministic tools over REST and MCP (analyze_chord, resolve_chord, generate_voicing, reharmonize, conduct_band). Start on the Free tier and scale to Theory Pro, Developer, or Commercial Licence plans as your quota grows.

  • Free Key1,000 calls/mo · 1 key · 6-page PDF guide
  • Theory Pro Tier10,000 calls/mo · 120 req/min · 2 keys
  • Developer Tier100,000 calls/mo · 10 keys · Builders Skills
  • MCP Commercial1,000,000 calls/mo · 25 keys · Commercial rights

Mint a key or choose a plan MCP licence terms

Available Now · bluesprincemedia.com/fyllm

FYLLM Studio Suite & Autopilot Pack

Local Mac film-scoring studio that locks to your picture cuts, voices every cue with THIRI, and exports stems plus a measured VERIFY.md report. Your sample libraries never leave your disk.

  • Free Lead Magnet6-Prompt Film Scoring Playbook emailed instantly
  • Music Agents on AutopilotBlotato + Claude Code automation pack
  • FYLLM Composer SuiteFirst run capped at 35 licences + private repo invite

Get the 6 Prompts or FYLLM Suite

B2B Licensing · thiri.ai/licensing

Embedded C++20 Hardware OEM Licence

The THIRI engine delivered as a static C++20 library plus a thin host integration layer and golden-vector verification suite. Proven on a dual Cortex-A7 at 800 MHz inside a 1.333 ms callback.

  • Average Block0.82 ms (1.11 ms worst, zero xruns)
  • Hardware ModelPer-unit OEM licensing on shipped boards
  • Software ModelAnnual MCP Commercial Licence

Hardware licensing details Book a technical call

02 · IN PUBLIC BETA & WAITLISTS (FREE BETA INSTALLER OR EARLY LIST)

Working builds in testing before full release.

These builds are running in code today. Enter your email on the matching door to get your beta key or reserve your spot on the launch list.

Public Beta · Free on macOS

THIRI VST3 + AU Plugin

Universal macOS VST3 and Audio Unit build tested in Ableton Live 11. Three tabs (PERFORM, CHART, TRIGGER) plus the HRN SXTN Jam per-bar scale plan switch. Free during the beta in exchange for your 5-question feedback report.

  • StatusOpen beta (macOS Apple Silicon + Intel)
  • ResultBeta key + macOS installer download
  • Feedback Doorbuild.thiri.ai/vst/feedback

Get the VST beta Join on homepage

Waitlist Open · Producers Pack

Producers MCP Skill Pack

For producers working in Ableton Live who pull from Splice and want a single Claude Code workflow to search local samples, place them in the session, and voice them to the THIRI chord chart.

  • StatusIn final packaging
  • ResultTagged on the Producers Pack first-access list
  • DoorWaitlist on bluesprincemedia.com/fyllm#get

Join Producers Pack waitlist →

Early Access List · Q1 2027

THIRI in Your DAW over MCP

Direct bidirectional bridge between Claude Desktop / Claude Code and the THIRI plugin inside your DAW session, so harmonic changes update your live chart without exporting MIDI files by hand.

  • StatusEarly access list open
  • ResultTagged for DAW-over-MCP beta cohort
  • DoorTick "THIRI in your DAW over MCP" in the beta form

Join DAW-over-MCP list →

03 · FREE BROWSER SURFACES (NO INSTALL, NO ACCOUNT)

Open in your browser right now.

Every browser surface below is free to play and calls the live engine. Use them to audition the theory layer, practice changes, or teach in a studio room.

Free Web Surface

CORIS Vocal Harmonizer

Sing one line into your browser mic and hear it answered in five parts in your own voice, formants kept, moving with the chord chart.

Sing at coris.thiri.ai →

Free Web Demo + Educator Funnel

Run the Changes & WoodShed

Practice chart engine (runthechanges.com) and educator suite (usetheblues.com) with guide-tone voicings and downloadable educator prompt packs.

Practice at runthechanges.com →

Free Web Surface

Composer C & Studio Rack

Browser writing surface (composer.thiri.ai) and 5-lane Studio Rack (build.thiri.ai/studio) for sketching progressions and Csound stems.

Write at composer.thiri.ai →

Free Web Surface

Sound Corpus 3D

155 studio samples mapped across Pitch (X), Timbre (Y), and Envelope (Z) in Euclidean space for deterministic acoustic retrieval.

Explore Sound Corpus 3D →

Free Web Surface

Helix Arpeggiator & Conductor

Voice-led MIDI paths (arpeggio.thiri.ai) and text-to-four-piece band arrangement (build.thiri.ai/innovate/conductor).

Play at arpeggio.thiri.ai →

All 10 Surfaces

demo.thiri.ai Hub

The interactive MCP tool runner, 3D Sacred Geometry, and every live browser surface in one index.

Open demo.thiri.ai →

04 · REPOSITORIES & HARDWARE BENCHMARKS (OPEN, GATED & NOT FOR SALE)

What is in the repos, and what is strictly a lab measurement.

We separate public packages, builder-tier skill repos, private buyer repos, and hardware benchmarks that are not commercial retail pedals.

Repo or Build Access Level What It Contains Definite CTA / Result
@bluesprincemedia/thiri-mcp
github.com/BluesPrince/thiri-mcp
Public Repo & npm
(PolyForm Noncommercial)
The MCP server package for Claude Desktop, Claude Code, and Cursor. Free for personal and research use; commercial products require an annual commercial licence. Mint a free API key →
BluesPrince/thiri-builders-skills
Claude Code Plugin & Referee
Public Repo + Builders Community Unified /thiri router, 24-rule thiri_detect.py referee, and 33 measured experiments across Magenta, Lyria, Gemini, ElevenLabs, Stable Audio, Csound, and Faust WASM. Join T.H.I.R.I. Builders →
BluesPrince/fyllm
FYLLM Studio & Film Tools
Private Repo
(Suite Collaborator Invite)
Full FYLLM Mac studio source, Csound instruments, and deterministic verify pipeline. Suite licence holders enter their GitHub handle on /fyllm/thanks for automatic repo access. Open FYLLM Suite page →
BluesPrince/thiri-meets-elk
HRN SXTN on Elk Stomp
Hardware Benchmark
(Not a SKU / Not for Sale)
1st place Elk Audio challenge at MUTEK Montreal. Profiling harness and raw CSVs proving 5 voices in 0.82 ms average on a stock Elk Stomp board. You cannot buy the pedal; hardware makers license the C++20 SDK. Read the measurement →

05 · 1-YEAR PRODUCT ROLLOUT PATH (Q4 2026 TO Q4 2027)

How the beta and browser surfaces graduate over the next 12 months.

Quarter Focus Surface Technical & Funnel Milestone Where to Start Today
Q4 2026 (Now) build.thiri.ai/keys & /fyllm Self-serve API keys, Developer tier with /thiri 24-rule referee skills, and the first 35-seat run of the FYLLM Composer Plugin Suite + Autopilot Pack. Get a key at build.thiri.ai/keys →
Q1 2027 THIRI VST3/AU 1.0 & Producers Pack Graduate THIRI VST3/AU from free public beta to v1.0 with key activation; release the Producers MCP Skill Pack (Splice + Ableton + THIRI) and DAW-over-MCP bridge to the waitlist. Download the macOS VST beta →
Q2 2027 Composer C + Sound Corpus 3D Browser preview remains free; add multi-track 48 kHz / 24-bit WAV stem export with signed VERIFY.md and PROVENANCE.json tied to your API key. Try Composer C in browser →
Q3 2027 Run the Changes + WoodShed Roll out the 3-pane Practice IDE, Helix Arp, 16-Step Band Conductor, and K-12 Educator Suite to jazz studios and school music departments for the Fall semester. Open Run the Changes →

06 · THE 4-YEAR AGENTIC MUSIC HORIZON (2027 TO 2030 TL;DR)

Where agentic music making is going in five years.

Prompting a text box for a stereo MP3 is a transitional phase. Stereo MP3s cannot hold a chord chart (39% chord share on unsteered Magenta RealTime 2), cannot hold a tempo grid (0 of 10 on Lyria Pro at 120 bpm), cannot pass copyright provenance audits, and cannot react to a live player inside a 1.333 ms callback. Here is the four-year arc we are building for.

Year 2 · 2027 to 2028

From Stereo Prompts to Bar-Locked, Steered Stems

Filmmakers, game developers, and DAW producers move away from one-shot stereo generators toward bar-locked stems steered by symbolic theory rails. Agents call THIRI before generation to lock voicings and leading tones, and run thiri_detect.py afterward to reject any stem that falls below the 33% chord-tone chance floor.

  • What Replaces Prompting/thiri steer + logit nudges + bar-by-bar MIDI conditioning
Year 3 · 2028 to 2029

Mandatory Stem Provenance & Harmonic Auditing

Following the generative training lawsuits, streaming DSPs, film distributors, and sync agencies require machine-verifiable proof of authorship and clean sample lineage. Every THIRI score exports a cryptographic PROVENANCE.json and VERIFY.md proving human/THIRI harmonic authorship and licence-clean synthesis (Csound, Faust WASM, or licensed studio corpora).

  • What Replaces Black-Box AudioVERIFY.md + PROVENANCE.json stem certification
Year 4 · 2029 to 2030

Sub-Millisecond Stage & Hardware Co-Players

Cloud LLMs have 300 to 2,000 ms of network latency, making them unusable on a live stage. Because the THIRI C++20 engine executes in 0.82 ms on an embedded ARM Cortex-A7, harmonic intelligence moves directly into stage pedals (HRN SXTN), wind controllers, and DAW audio callbacks: listening to a soloist and counter-moving five formant-preserved voices in real time.

  • What Replaces Fixed IntervalsHeadless C++20 engine inside the < 1.333 ms audio callback
Year 5 · 2030 to 2031

Autonomous Multi-Agent Ensemble OS

Recorded music stops being purely static files. Games, interactive films, spatial environments, and 24/7 broadcasts (Meridian) ship with a lightweight SCORE.md + HARMONY.json spec that conducts physical modeling (Faust/Csound), 3D acoustic sample retrieval (Sound Corpus 3D), and voice-led harmony directly on the listener's device at zero marginal cloud cost.

  • What Replaces Static LoopsClient-side Ensemble OS (SCORE.md + HARMONY.json + Corpus 3D)