Mix Audio Stems Online

Separate a song into available stems, then independently control their volume, mute and solo states. Create a backing track for practice or export a custom mix.

Upload a song — it's free to start

Supported formats: MP3, WAV, FLAC, M4A, AAC, OGG (Max: 50MB)

What you get

  • Separates uploaded audio into the stem roles available on this deployment, then validates them against the original source.
  • Adjust each available stem independently, with synchronized mute, solo and volume controls.
  • Build karaoke, drumless, bass-practice, guitar-practice and a cappella mixes when the required stems are available.
  • Export the current mix and continue using it as a Practice Mode audio source.

How it works

  1. 1 Upload an audio file from your computer or phone.
  2. 2 The AI analyzes tempo, key, and instrumentation, separating stems when needed.
  3. 3 Processing runs in the background — you can watch the progress live.
  4. 4 Open the result page to mix the validated stems, export the backing track, or practice with it.
Try it now

Frequently Asked Questions

No. Stem separation runs asynchronously through NutifAI's existing processing pipeline. Once the validated stems are ready, the mixer preview responds in real time.

Availability depends on the separation result and deployment configuration. The mixer only shows validated stems and presets that can be constructed from them.

Yes. The result page can provide the current source-bound mix to Practice Mode, where speed control, looping and other practice tools continue to work.

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