What it is
Jevthoven turns a one-sentence music description into an editable multitrack composition. It is for users who want to play, reshape, and export symbolic music and MIDI, with every note traceable to a persisted Jev decision.
How it uses Jev
Jev makes sequential Choice calls for plan (meter, tempo, form, lanes), instrument choice, harmony, phrase intent, per-lane groove parameters, and complete-bar patterns. Each step resends a bounded rolling context of recent bars, motif, and harmony plan. Code renders every pick into notes.
Primitives:choice
Technique worth stealing
Bounded rolling context resent each step for sequential musical decisions.
Try it
npm install && npm run build && npm start, or use Pinokio 1-click install.
Evidence
Each line is one question put to Jev about the README. ≥ 0.60 reads as yes, ≤ 0.40 as no; in between Jev is not making a call.
- Jev-centricyes0.95
- Shows a System One patternyes0.82
- Handles uncertaintyno0.04
- Measuredno0.04
- Runnableyes0.64
- Worth recommendingunclear0.60
- Model replicano0.22
- Problem scopescore on a 0–2 scale0.48
- About Jevyes0.98
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.