오디오 to MIDI

Convert audio to MIDI — polyphonic, free, no signup

Drop audio into the tool above and the AI detects the notes and turns them into MIDI. It handles not just single-line melodies but polyphonic material — piano and guitar parts where several notes sound at once. Use it to draft transcriptions, replace a recording with programmed sounds, or speed up learning a part by ear.

The transcription runs on Basic Pitch, the open-source AI model published by Spotify, executing right in your browser — your audio file is never uploaded to a server.

Everything runs in your browser — your audio is never uploaded.

How to turn audio into MIDI

1. Upload audioUpload the audio you want to convert. Processing happens in your browser.
2. Transcribe to MIDIBasic Pitch AI converts the audio — including polyphonic piano and guitar — into MIDI notes.
3. Edit or exportOpen the notes in the piano-roll editor to tweak them, or export the MIDI file.

Getting a cleaner transcription

Transcription accuracy is mostly decided by the input. A recording of a single instrument works best; if the part you want lives inside a full mix, run the 6-stem splitter first and convert the isolated piano or guitar stem — false notes drop dramatically. Heavy reverb and distortion make detection harder for any model.

No AI transcription is 100% accurate — fast runs and low registers can produce extra or missing notes. The realistic way to use it: treat the result as a strong first draft, then fix the stray notes in the piano-roll editor instead of transcribing from scratch.

What to do with the MIDI

The converted notes open in a piano-roll editor and export as a standard MIDI file for any DAW. You can also assign an instrument and play them back right in the browser DAW on this site — and if you are not sure of the key, the BPM & key detector pairs well for transposing.

How it compares to Melodyne and AnthemScore

Against the established desktop options — similar goals, different shapes:

Competitor details are as publicly known as of mid-2026 — check each vendor for current terms.