T.H.I.R.I Composer is a browser-based instrument powered by Csound. It's live right now. You can create drums, keys, arpeggios, and vocal harmonies — and every beat you publish stays yours.
The instrument is live. These features are deployed and usable right now.
Live
34 synthesized drum instruments with a 16-step sequencer
Live
Chord sequencer with rootless, shell, and drop2 voicings
Live
6-mode arpeggiator synced to your chord progression
Live
4-voice vocal harmonizer with real-time mic input
Live
Save, load, and publish beats to the catalog
Live
Audio buffer control (like Ableton's audio preferences)
Roadmap
What's Coming
We're building in the open. Here's what's next.
In Dev
Drum Lab — design your own sounds from scratch, bake them into samples
Planned
Keys Patch Designer — LFO-to-CV routing, full synth control
Planned
Sound Library — share and license individual sounds (Splice model)
Planned
Creator profiles with followers, play counts, and revenue dashboard
Planned
Monthly payouts via Stripe Connect
The Revenue Model
You Create. We Handle the Rest.
70%
Your share of every API call that uses your music
Every time an AI video tool pulls your beat through our API, you earn 70% of that transaction. The API is built. The metering is built. We're pre-launch — no payouts are flowing yet. Early creators will have first-mover advantage when integrations go live.
We're pre-launch. There are no vanity metrics to show you. What we can tell you: the instrument works, the API spec is published, and we're talking to AI video platforms about integration. Early creators will shape what this becomes.