---
title: BACHI
emoji: 🎹
colorFrom: yellow
colorTo: green
sdk: docker
sdk_version: 6.24.0
app_file: app.py
pinned: false
license: mit
short_description: Chord recognition from MIDI or MusicXML scores
tags:
  - category:analysis
  - subcategory:music-analysis
  - domain:music
  - input:midi
  - output:midi
  - output:labels
app_port: 7860
---

# BACHI — HARP Endpoint

Deploys [BACHI](https://github.com/AndyWeasley2004/BACHI_Chord_Recognition) as a [PyHARP](https://github.com/TEAMuP-dev/pyharp) endpoint.

## What it does

Automatic chord recognition from symbolic music scores. Returns the score as MIDI, with a chord label (root, quality, and bass) over each beat-aligned segment.

## Inputs

- MIDI or MusicXML file (.mid, .midi, .musicxml, .mxl, .xml)
- Model type: Classical or Pop

## Note

Model is trained on piano data only and supports MIDI pitch range 21-108.

## License

MIT