dø1 / v1.0.1
After You’ve Gone · Creamer / Layton, 1918 — five parts, every one generated. Pick a part, then pick the source that plays it.
Acoustic modelling.
36 modelled sources — trumpet, violin, cello, sax, guitar, piano, drums — that respond to how the part is written. Not samples triggered by a keyswitch. A model that learned the instrument.
dø1 / v1.0.1
After You’ve Gone · Creamer / Layton, 1918 — five parts, every one generated. Pick a part, then pick the source that plays it.
dø1 / v1.0.1
Sing, Sing, Sing · Prima / Goodman, 1937 — the lead clarinet over three sections: saxes, trumpets, trombones. Each section is its chairs summed — five saxes, four trumpets, four bones — and all fourteen chairs are generated.
dø1 loads as a plugin in Logic, Ableton, FL Studio, Pro Tools and REAPER. Write the part in the piano roll you already use; the audio comes back on the track it came from.
Get the DAW plugin Placeholder link — points at /downloads until the plugin build ships.
A sampled instrument is a set of recordings. Someone played a trumpet at three dynamics across its range, and the plugin picks the nearest recording and transposes. That is why programmed brass gives itself away: turn a soft sample up and you get a quiet recording played loudly, not a player pushing harder.
Modelling the instrument instead means learning how it behaves — how the harmonic balance shifts as a note is pushed, how the attack changes with articulation, what the top of the range costs the player. A crescendo becomes one continuous change rather than three recordings crossfading into each other.
So if you have been looking for a realistic guitar VST, a convincing strings patch, or an orchestral library that does not need 200 GB on disk and a keyswitch map to sound played, this is the other approach to that problem. Nothing to install, nothing to load.
One part. Three renders at the same settings, different seed — a sampler would return the same recording every time.
Alongside the notes you can hand it a piece of AUDIO and say: sound like this. The reference does not have to be a saxophone, or even an instrument — it is not being sampled, and none of it ends up in the output.
What the model takes from it is a tone: the brightness, the roughness, how the energy sits across the spectrum. The same written line comes back played by something that has been pushed toward that colour.
Below, one sax part rendered four times. The row on top is what was fed in — bagpipes, a fart, a slot machine, a howl. Click one to hear the reference, then play the sax it produced.
Sax rendered with Bagpipes as the timbre reference.
There is a native Audio Unit — dø1 — that opens the session inside a plugin window in Logic, so the work does not have to live in a browser tab. Parts rendered here land in a Logic or Ableton project natively rather than as a bounced stem, which means they arrive as tracks you can still edit.
The sources run in the browser and in the app rather than as an instrument VST you install. There is a native Audio Unit, dø1, that brings the session into a plugin window in Logic. Parts you render arrive in a Logic or Ableton project as editable tracks.
A sample library plays back recordings and crossfades between dynamic layers. A model learns how the instrument behaves, so a crescendo is continuous rather than three recordings fading into one another — and there is nothing to download or load.
36 sources today: strings (violin, viola, cello, double bass, arco and pizzicato), brass (trumpet, muted trumpet, trombone, french horn, tuba), woodwinds (flute, clarinet, oboe, bassoon, saxophone), keys, guitars, voices, drums and percussion, plus string, brass and wind ensembles.
The list is the model's trained vocabulary, so a missing instrument is a training question rather than a setting. It is worth asking for — the architecture is not specific to these instruments.
Yes. Velocity moves timbre rather than only level, and articulations that genuinely change the sound — pizzicato, mute — are separate sources rather than effects applied afterwards.
There is a free tier. Heavier use and saved sessions need an account; pricing is on the pricing page.