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🎹 Voice to Instrument & MIDI - Hum to Notes Online

What Is Voice to Instrument?

Voice to Instrument uses Spotify's Basic Pitch AI model to detect the notes in your humming or singing. The neural network analyzes pitch in real time and extracts the melody as note events - then the tool re-synthesizes them with your chosen instrument.

Everything runs locally in your browser via ONNX Runtime - your recording never leaves your device. The model is only about 230 KB and downloads instantly. Hum a tune, pick an instrument, and hear it transformed.

Pro Tips

  • Hum clearly and steadily - one note at a time works best for accurate detection.
  • Try different instruments on the same melody - piano, guitar, sax, and strings each give a different feel.
  • Slower melodies detect more reliably than fast runs. If a note is wrong, re-record that part.

Frequently Asked Questions

Is voice to instrument free?

Yes - completely free with no limits. The AI runs on your own device.

Is my recording uploaded to a server?

No. All pitch detection and synthesis happens locally in your browser.

What can I do with the result?

Preview it in the browser and export it as a WAV file to use in your projects.

Which instruments are available?

Piano, guitar, saxophone, and strings - more coming soon.

What audio can I use?

Hum or sing directly with the record button, or upload any audio file with a single melody line.