What this is. A compact, JSON‑based loop format for vibe‑coding musical ideas with large language models (LLMs), quick human edits, and reliable MIDI playback on the OP‑XY. One file = one loop. You can regenerate, tweak, and audition rapidly without wrestling DAW projects or opaque binary formats.
What you can do with it.
- Generate with an LLM: Keys are stable, field names are explicit, and defaults are predictable—so models can create and modify patterns safely.
- Edit by hand or UI: The structure maps cleanly to a step grid, plus lanes for CC and LFO modulation.
- Play it back: A lightweight runtime reads the JSON and schedules notes/automation to the OP‑XY over MIDI.