# Pro Audio Stem Separator

Separate a music mix into drums, bass, other, vocals, guitar, and piano, then download one ZIP.

> Canonical page: https://elysiatools.com/en/tools/audio-stem-separation-pro

- **Category:** Media

- **Keywords:** audio, stem separation, demucs, vocals, drums, bass, piano, guitar, music, zip

## Overview

Runs the local HT-Demucs 6-stem ONNX model on a bounded audio clip. The ZIP contains six encoded stems and manifest.json. Source separation is not lossless: bleed and artifacts can remain, so use the files as a production starting point rather than isolated originals.

## Inputs

- **Audio File** (file): Upload a music mix
- **Output Format** (select)

## When to use

- Separate vocals or instruments from a music mix for editing and remixing.
- Create practice tracks by reducing the prominence of vocals, drums, bass, or other instruments.
- Prepare a multitrack starting point from a bounded audio clip.

## How it works

- Upload one music file up to the tool's 100 MB limit.
- Choose an output format: FLAC, WAV, MP3, M4A (AAC), or OGG Vorbis.
- The local HT-Demucs model separates the clip into six stems: drums, bass, other, vocals, guitar, and piano.
- Download a ZIP containing the six encoded stems and manifest.json.

## Use cases

- Music producers isolating vocals, drums, bass, guitar, or piano for remixing.
- Musicians creating instrument-focused practice or rehearsal tracks.
- Editors preparing separated audio elements for a short music project.

## Frequently asked questions

### Which stems does the tool create?

It creates drums, bass, other, vocals, guitar, and piano stems.

### What audio formats can I choose for the stems?

You can choose FLAC, WAV, MP3, M4A (AAC), or OGG Vorbis.

### What does the download contain?

The ZIP contains six encoded stems and a manifest.json file.

### Is the separation lossless?

No. Bleed and audio artifacts can remain, so use the stems as a production starting point.

### How large can the uploaded audio file be?

The uploaded file can be up to 100 MB.

## Related tools

- [Audio Channel Mixer](https://elysiatools.com/en/tools/audio-channel-mix): Mix left and right channels into mono with specific ratios
- [Drum Loop Slicer](https://elysiatools.com/en/tools/audio-drum-loop-slicer): Detect drum-hit transients in an audio loop, slice it into individual hits, and export them as a ZIP with timing and optional MIDI.
- [Audio Loudness LUFS Normalizer](https://elysiatools.com/en/tools/audio-loudness-lufs-normalizer): Measure integrated LUFS, true peak, and LRA, then normalize audio to Spotify, Apple Music, broadcast, or custom targets
- [Audio Master Reference Match](https://elysiatools.com/en/tools/audio-master-reference-match): Match your mix's tonal balance and loudness to a reference track and export the corrected master, with a before/after third-octave band report.
- [Audio Melody Contour Extractor](https://elysiatools.com/en/tools/audio-melody-contour-extractor): Extract a dominant melody path from audio and export MIDI, note events, a pitch contour, SVG, and JSON in one ZIP.
- [Audio Multichannel Split](https://elysiatools.com/en/tools/audio-multichannel-split): Split a multichannel audio file into separate mono tracks (one per channel)
- [Audio Podcast Ad Marker Inserter](https://elysiatools.com/en/tools/audio-podcast-ad-marker-inserter): Insert ad-insertion markers into a podcast episode: audible beep tones, ID3 chapter markers, and metadata tags for programmatic ad insertion.
- [Audio Podcast Trailer Builder](https://elysiatools.com/en/tools/audio-podcast-trailer-builder): Assemble a short podcast trailer from intro music, up to 5 highlight clips, a music bed under the clips, and a loudness target.

## Samples

- [Copyright-Free FLAC Audio Samples](https://elysiatools.com/en/samples/flac-samples): Lossless FLAC audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
- [Copyright-Free MP3 Audio Samples](https://elysiatools.com/en/samples/mp3-samples): Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio
- [Copyright-Free WAV Audio Samples](https://elysiatools.com/en/samples/wav-samples): Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
- [Copyright-Free Raw PCM Audio Samples](https://elysiatools.com/en/samples/pcm-samples): Raw PCM s16le audio samples featuring nature ambience and relaxing music for waveform, playback, and conversion workflows

## Related content

- [Karaoke and Stem Separation Tools](https://elysiatools.com/en/hubs/karaoke-and-stem-separation-tools): Separate vocals and accompaniment, clean the resulting stems, set a controlled balance, and prepare a karaoke or remix-ready delivery.