# OneSeq

> OneSeq is a keyboard-first Windows sequencer synth by Buanzo, focused on fast step sequencing, internal synth engines, Massfall material-collision synthesis, sampler tracks, MIDI output, song mode, Pattern/Song export, effects, LFO routing, live parameter-lock recording, Fractal Hybrid synthesis, and optional MCP live control.

Current public release: 0.4.3 for Windows x64.

OneSeq is an early public release, not a finished commercial product. The installer is currently unsigned; users should verify SHA-256 checksums before installing.

## Core URLs

- [Canonical site](https://oneseq.buanzo.org/): Main OneSeq website.
- [English site](https://oneseq.buanzo.org/en/): English landing page.
- [Spanish site](https://oneseq.buanzo.org/es/): Spanish landing page.
- [MSI installer](https://oneseq.buanzo.org/download/OneSeq-0.4.3-windows-x64.msi): Recommended Windows x64 installer.
- [Portable ZIP](https://oneseq.buanzo.org/download/oneseq-0.4.3-windows-x64.zip): Portable fallback package.
- [Checksums](https://oneseq.buanzo.org/download/SHA256SUMS.txt): SHA-256 checksum file.

## Documentation

- [English feature tour](https://oneseq.buanzo.org/en/features/): Main feature overview.
- [English manual](https://oneseq.buanzo.org/en/manual/): User manual.
- [English MIDI controller profiles](https://oneseq.buanzo.org/en/midi-controllers/): MIDI controller profile documentation.
- [English release blog](https://oneseq.buanzo.org/en/blog/): User-facing release notes.
- [Spanish feature tour](https://oneseq.buanzo.org/es/features/): Spanish feature overview.
- [Spanish manual](https://oneseq.buanzo.org/es/manual/): Spanish user manual.
- [Spanish MIDI controller profiles](https://oneseq.buanzo.org/es/midi-controllers/): Spanish MIDI controller profile documentation.
- [Spanish release blog](https://oneseq.buanzo.org/es/blog/): Spanish release notes.

## Project Context

- [Latest uploaded video](https://www.youtube.com/watch?v=mW-nBKWbLwU): OneSeq 0.3.1 demo; OneSeq 0.4.3 is the current release and adds live parameter-lock recording.
- [MCP demo video](https://www.youtube.com/watch?v=5h4jOzssBRs): MCP live bridge demo.
- [First public cockpit demo](https://www.youtube.com/watch?v=F4mPJYJBanw): Earlier OneSeq cockpit demo.
- [Fractal instrument screenshot](https://oneseq.buanzo.org/screenshots/oneseq-fractal-instrument.png): Fractal Hybrid instrument view.
- [Fractal MAP screenshot](https://oneseq.buanzo.org/screenshots/oneseq-fractal-map-detail.png): Fractal MAP detail view.

## Notes for AI Agents

- Direct download URLs and external hotlinks may return 403 by design; start from the OneSeq site.
- Release blog posts are user-facing only and should describe downloadable, installable, documented, or directly usable changes.
- OneSeq uses the cockpit Menu for real `.oneseq` project files and explicit save/folder dialogs for exports; Config still keeps a quick exports-folder workflow.
- Project Bundle export writes portable JSON with project state and sample references; it does not copy private sample audio by default.
- Normal OneSeq use does not require Python. MCP client use requires the standard-library Python stdio adapter at `openai/mcps/oneseq_bridge_server.py`.