ChordMiniApp
An open-source music analysis tool for chord recognition, beat tracking, and visualizers.
Open-source music analysis, chord recognition, and beat tracking web application.
ChordMiniApp is an open-source platform providing music analysis, chord recognition, beat tracking, and lyrics synchronization. It is built for musicians, producers, and audio engineers who need advanced algorithmic analysis from audio uploads and YouTube videos.
What it is
The application analyzes audio to deliver beat and chord grids, Roman Numeral Analysis, key modulation signals, and song segmentation overlays. It includes an interactive guitar diagram viewer, a real piano roll visualizer with MIDI export, and experimental melody transcription via Sheet Sage.
Who it's for
It suits audio professionals, musicologists, and developers who want local or self-hosted audio analysis pipelines. It does not suit casual users looking for a plug-and-play consumer mobile app.
Key features
Beat and Chord Analysis
Visualizes chord progressions with synchronized beat detection and song segmentation overlays.
Interactive Guitar Diagrams
Provides accurate fingering patterns and multiple chord positions backed by chords-db.
Real-time Piano Visualizer
Renders falling MIDI notes synchronized with chord playback and supports DAW MIDI export.
AI Lead Sheet Assistant
Transcribes lyrics with synchronization alongside a contextual AI chatbot for analysis.
Up and running in 3 steps
Our honest verdict
What's great
- Comprehensive feature set including guitar diagrams, piano rolls, and beat grids
- Context-aware LLM integration for music analysis and translation support
- Supports experimental melody transcription and MIDI file exports
- Includes song segmentation overlays for structural sections like verse and chorus
Where it falls short
- Requires managing a complex multi-part stack with Node.js, Python, Docker, and Git LFS
- Native Windows installation of the Python backend is unreliable due to dependency conflicts
- Experimental melody transcription is slower and has limited accuracy
Pricing & license
Free under its license, with the only cost being your own hosting infrastructure and required API keys.
Open remote AI-training roles
880 open remote AI-training roles, updated November 15, 2026; most pay $20–$175 an hour. Zekai lists them free; the application goes to the employer’s platform.
Alternatives
These reviewed AI tools do the same job instantly — from our scored directory.
Use it, or have us set it up
FAQ
What APIs are required to run ChordMiniApp?
You need a Firebase account and a Gemini API key. Optional keys include YouTube, Music AI, and Genius APIs.
Can I export my analysis?
Yes, you can export chord progressions as MIDI files from the piano visualizer for use in any DAW.
