6-stem separation with mix preview
Separate a full song into six stems: vocals, drums, bass, piano, guitar, and Other. The stem page also shows preview and rebalance controls before export.
Music Demixer
RivendicaMusic Demixer is a web app that separates songs into stems and converts audio into MIDI or sheet-music drafts, with specialized workflows for piano and drums. It helps musicians and producers preview, rebalance, and export files for practice, editing, or DAW use.
Overview
Music Demixer is an online audio-to-music tool that turns uploaded songs into stems, MIDI, and sheet-music drafts. The site positions piano and drum transcription as the most specialized workflows, while other instruments can be processed as editable drafts.
It supports stem separation, piano sheet music, Drum MIDI, drum kit breakdowns, and exportable audio files for practice or production. The product is designed for users who want to upload a track once, preview the result, and download files in formats that fit score editing or DAW-based work.
Features
Audio-to-score and MIDI workflows
Generate piano sheet music, Drum MIDI, and editable drafts from uploaded audio. The site distinguishes specialized transcription for piano and drums from draft-level output for guitar, bass, vocals, and Other.
Drum extraction and kit-piece separation
Use the drum workflow to isolate drums, split them into kit pieces, or create Drum MIDI and drum notation drafts. The site exposes 4-, 5-, and 6-piece kit splits, including kick, snare, toms, hi-hat, ride, and crash options.
Instrument-specific transcription paths
Choose between piano, drums, guitar, bass, vocals, and Other when creating MIDI or sheet-music outputs. Piano and drums are described as the most specialized paths, while the other parts are treated as drafts that may need cleanup.
Broad input and export support
Upload MP3, Opus, or WAV for stem downloads, and the FAQ lists MP3, WAV, FLAC, M4A/AAC, OGG, AIFF, and other common formats. The site says conversion is handled automatically when needed.
Built-in workflow help
Access a help chat called Ask Music Demixer for workflow guidance and file questions while you work.
Use Cases
Stem splitting for song analysis
Upload a full mix, separate the stems, and rebalance individual parts before exporting audio for practice or production work.
Piano and drum transcription
Turn a song into piano sheet music or Drum MIDI when you need a more structured starting point for editing or transcription.
Drum breakdown and practice prep
Isolate drums and split them into kit pieces for more detailed listening, practice, or mix cleanup.
DAW-oriented stem export
Export stems in MP3, Opus, or WAV form when you want audio files that can move into a DAW-based workflow.
Workflow selection and guidance
Use the help chat to choose between sheet music, MIDI, stems, or drum kit options when you are not sure which workflow matches the source audio.
Pros and Cons
Pros
- Combines stem separation, MIDI, and sheet-music workflows in one upload.
- Offers specialized treatment for piano and drums instead of only generic transcription.
- Supports multiple output types, including PDF score drafts, editable MusicXML, MIDI, and audio stems.
- Lets users preview and rebalance separated stems before export.
- Provides a help chat for choosing workflows and understanding outputs.
Cons
- The site describes guitar, bass, vocals, and Other as drafts that may need note cleanup.
- Pricing information is limited to a trial and Pro plan on the pricing page, so long-term plan details are not fully spelled out.
- The source does not provide detailed integration information for specific DAWs or notation apps.
FAQ
What do I get after processing?
The site says each job returns downloadable files for the output you selected. That can include stem audio packs, DAW-ready MIDI, and, when applicable, PDF score drafts plus editable MusicXML.
What audio formats are supported?
Supported formats listed on the site are MP3, WAV, FLAC, M4A/AAC, OGG, and AIFF, plus most common formats. The app also says it can handle conversion automatically if needed.
How is processing handled?
Processing runs through Music Demixer's secure cloud service. You upload once, then download the results when the job finishes.
Is there a free trial or paid plan?
The pricing page shows a 1-day Pro trial with 5 full-quality jobs up to 5 minutes each, and it says no card is required. It also lists a Pro plan at $9.99 USD per month.
Does it integrate with other music software?
The site offers workflows for stems, piano, drums, MIDI, and score drafts. It does not present full integration details for DAWs or other apps beyond downloadable files such as MIDI, MusicXML, WAV, MP3, and Opus.
Quick Facts
- Category
- Audio transcription and stem separation
- Platform
- Web app
- Primary users
- Musicians, producers, and people working from song audio
- Source domain
- freemusicdemixer.com
- Core outputs
- Stems, MIDI, PDF score drafts, and editable MusicXML
- Pricing
- 1-day trial and Pro plan listed; no-card trial noted
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