Find a starting point for learning a song
ChordFold helps listeners explore the harmony in an audio recording. The AI chord finder helps you explore a recording’s harmony, listen through estimated changes, and compare chords with instrument references. The video audio remover makes a silent copy of a video by removing its audio tracks.
Local by design
Your selected files are processed on your device. You do not need an account or an upload to a processing server. The site still loads its pages and processing resources over the internet. Read the Privacy Policy for the distinction between local files and ordinary website requests.
Clear about the limits
Chord recognition is experimental: complex music can produce incorrect chords and timing. The example recording uses authored annotations to explain the interface. Video processing depends on supported containers and codecs, and large files can exceed device memory. We describe these limits alongside each tool so you can decide whether it fits your task.
Built with open-source tools
The site uses Nuxt and Vue. Local chord analysis uses a BTC model and ONNX Runtime; attribution and license files are distributed with the analysis resources. Video processing uses Mediabunny to copy video data while leaving audio out of the output.
Get in touch
For support, privacy questions or rights requests, email [email protected]. Website operator: seven.
For useful bug reports, see our contact page.