# Voice Split

**URL:** <https://onehack.st/t/voice-split/324022>\
**Category:** Discussion & Solutions\
**Tags:** solved\
**Created:** [July 19, 2026, 7:14pm UTC](https://onehack.st/t/voice-split/324022 "2026-07-19T19:14:52Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Wantok](https://onehack.st/user_avatar/onehack.st/wantok/32/24960_2.png) [@Wantok](https://onehack.st/u/Wantok)\
**Post date:** [July 19, 2026, 7:14pm UTC](https://onehack.st/t/voice-split/324022/1 "2026-07-19T19:14:52Z")

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Hi awesome members,  
Looking for solutions, particularly any tool that can split up recorded voice such as soprano, bass, alto, and tena separately from the mixed record.  
A free open source tool will be much appreciated.  
🙏

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**Author:** ![Astrid](https://onehack.st/user_avatar/onehack.st/astrid/32/174869_2.png) [@Astrid](https://onehack.st/u/Astrid)\
**Post date:** [July 20, 2026, 1:50pm UTC](https://onehack.st/t/voice-split/324022/2 "2026-07-20T13:50:52Z")

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![voice-split-hero](https://onehack.st/uploads/default/original/3X/a/c/ac074811f137d2570e2c3e19fc1d195e077c42bb.jpeg)

Vocal removers pull the choir OUT of music — wrong tool.  
You need to split choir voices FROM each other: soprano / alto / tenor / bass.  
Free tools exist for this exact problem. All below.

> **🌐 Browser-only — SATB separation, zero install**
>
> **MVSEP** — upload file, pick model, download split stems:  
> [https://mvsep.com/en/algorithms](https://mvsep.com/en/algorithms)  
> → Start with #104 (multi-stem vocal): [https://mvsep.com/algorithms/104](https://mvsep.com/algorithms/104)
> 
> **HuggingFace Spaces** — free GPU, runs in browser:
> 
> - All models in one UI: [https://huggingface.co/spaces/r3gm/Audio\_separator](https://huggingface.co/spaces/r3gm/Audio_separator)
> - UVR5 with BS-Roformer + MDX23C: [https://huggingface.co/spaces/TheStinger/UVR5\_UI](https://huggingface.co/spaces/TheStinger/UVR5_UI)
> - SOTA Mel-RoFormer + HTDemucs: [https://huggingface.co/spaces/JacobLinCool/vocal-separation](https://huggingface.co/spaces/JacobLinCool/vocal-separation)
> - ZFTurbo MDX23: [https://huggingface.co/spaces/Ma5onic/MVSEP-MDX23-music-separation-model](https://huggingface.co/spaces/Ma5onic/MVSEP-MDX23-music-separation-model)

> **🖥️ UVR5 + MSST-WebUI — free desktop apps, offline, no coding**
>
> **UVR5** (Ultimate Vocal Remover):  
> [https://github.com/anjok07/ultimatevocalremovergui](https://github.com/anjok07/ultimatevocalremovergui)  
> → Use MDX-Net or BS-Roformer models inside — not the default Spleeter (= old, not built for choir)  
> → Choir threads: [https://github.com/Anjok07/ultimatevocalremovergui/discussions/800](https://github.com/Anjok07/ultimatevocalremovergui/discussions/800)
> 
> **MSST-WebUI** (browser UI, all latest models):  
> [https://github.com/SUC-DriverOld/MSST-WebUI](https://github.com/SUC-DriverOld/MSST-WebUI)  
> → One-click install: [https://github.com/xavikla555/MSST-Installer](https://github.com/xavikla555/MSST-Installer)  
> → Free Colab run: [https://github.com/SUC-DriverOld/MSST-WebUI/blob/main/webUI\_for\_colab.ipynb](https://github.com/SUC-DriverOld/MSST-WebUI/blob/main/webUI_for_colab.ipynb)
> 
> **PolUVR** (UVR with Gradio UI, GPU):  
> [https://github.com/Bebra777228/PolUVR](https://github.com/Bebra777228/PolUVR)

> **🔬 SATB-specific tools — built for choir, not hacked from vocal removers**
>
> **UMSS** — inputs mixed choir → outputs 4 voice streams (S/A/T/B):
> 
> - Audio demo: [https://schufo.github.io/umss/](https://schufo.github.io/umss/)
> - Code: [https://github.com/schufo/umss](https://github.com/schufo/umss)
> - ICASSP 2024 (newer): [https://github.com/PierreChouteau/umss\_icassp](https://github.com/PierreChouteau/umss_icassp) | [https://pierrechouteau.github.io/umss\_icassp](https://pierrechouteau.github.io/umss_icassp)
> 
> **Choral Music Separation** (ISMIR 2022):
> 
> - Demo: [https://retrocirce.github.io/cms\_demo/](https://retrocirce.github.io/cms_demo/)
> - Code: [https://github.com/RetroCirce/Choral\_Music\_Separation](https://github.com/RetroCirce/Choral_Music_Separation)
> 
> **MTG Barcelona** (top-3 music tech lab) — full SATB toolkit:
> 
> - Choral voice extraction: [https://github.com/MTG/content\_choral\_separation](https://github.com/MTG/content_choral_separation)
> - Voice assignment in SATB quartets: [https://github.com/helenacuesta/voas-vocal-quartets](https://github.com/helenacuesta/voas-vocal-quartets)
> - SATB separation + pitch extraction: [https://github.com/pc2752/choir\_separation\_f0\_analysis](https://github.com/pc2752/choir_separation_f0_analysis)
> - Live demos: [https://helenacuesta.github.io/demos.html](https://helenacuesta.github.io/demos.html)
> 
> **Pretrained Conditioned-U-Net** — hear SATB results directly:  
> [http://www.dariuspetermann.com/satb-source-separation-results/](http://www.dariuspetermann.com/satb-source-separation-results/)
> 
> **SepACap** (2025, a cappella multi-singer):
> 
> - Code: [https://github.com/ETH-DISCO/SepACap](https://github.com/ETH-DISCO/SepACap)
> - Paper + demo: [https://arxiv.org/abs/2509.26580](https://arxiv.org/abs/2509.26580)

> **🧲 Choir-trained models — load into UVR5 or MSST, skip generic ones**
>
> Chorus Male+Female BS-Roformer (splits male/female first → then refine per voice):  
> [https://huggingface.co/Sucial/Chorus\_Male\_Female\_BS\_Roformer](https://huggingface.co/Sucial/Chorus_Male_Female_BS_Roformer)
> 
> MSST full model pack with choral models included:  
> [https://huggingface.co/Sucial/MSST-WebUI](https://huggingface.co/Sucial/MSST-WebUI)
> 
> MelBand Roformer 4-stem fine-tuned large:  
> [https://huggingface.co/SYH99999/MelBandRoformer4StemFTLarge](https://huggingface.co/SYH99999/MelBandRoformer4StemFTLarge)
> 
> All public UVR models collected:  
> [https://huggingface.co/Blane187/all\_public\_uvr\_models](https://huggingface.co/Blane187/all_public_uvr_models)
> 
> ZFTurbo model zoo + community model drops:  
> [https://github.com/ZFTurbo/Music-Source-Separation-Training/blob/main/docs/pretrained\_models.md](https://github.com/ZFTurbo/Music-Source-Separation-Training/blob/main/docs/pretrained_models.md)  
> [https://github.com/ZFTurbo/Music-Source-Separation-Training/issues/1](https://github.com/ZFTurbo/Music-Source-Separation-Training/issues/1)

> **🎼 Stem → sheet music — convert separated voice audio to notation**
>
> **Basic-Pitch** (Spotify) — audio to MIDI, single voice, free browser tool:  
> [https://basicpitch.spotify.com/](https://basicpitch.spotify.com/)
> 
> **Omnizart** — full transcription including singing voice:  
> [https://github.com/Music-and-Culture-Technology-Lab/omnizart](https://github.com/Music-and-Culture-Technology-Lab/omnizart)  
> Colab: [https://colab.research.google.com/github/Music-and-Culture-Technology-Lab/omnizart/blob/master/colab.ipynb](https://colab.research.google.com/github/Music-and-Culture-Technology-Lab/omnizart/blob/master/colab.ipynb)

> **💡 5 situations where choir separation actually pays off**
>
> 1. **Choir director** → extract each voice part separately so singers can practice their part in headphones with everyone else muted
> 2. **Music teacher** → isolate one student’s voice section from a group recording to check if they’re singing the right notes
> 3. **A cappella group** → old choral recording has no sheet music — separate each part, run through Basic-Pitch, get notation
> 4. **Sound engineer** → client’s choir recording has one voice part too loud — separate, re-balance, re-mix cleanly
> 5. **Music student** → famous choir has a beautiful harmony you want to learn — pull each voice apart and transcribe it yourself

Vocals were never locked. Just mixed. Now you have the unmixer.

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**Author:** ![Wantok](https://onehack.st/user_avatar/onehack.st/wantok/32/24960_2.png) [@Wantok](https://onehack.st/u/Wantok)\
**Post date:** [July 22, 2026, 2:56am UTC](https://onehack.st/t/voice-split/324022/3 "2026-07-22T02:56:10Z")

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@Astrid 🙏 Namaste.