SoulX-Singer
- Android app
- Not listed
- Free plan
- Yes
- Runs on
- Linux, self-hosted, Web
Summary
SoulX-Singer is an open-source model for generating singing voices for singers it has not been tuned on. It can control pitch, rhythm, and expression using either melody-conditioned F0 contours or score-conditioned MIDI notes. Its voice-conversion system changes raw singing audio to a target singer’s voice while retaining melody, rhythm, and lyrics, without requiring lyric or MIDI transcriptions. The system supports Mandarin Chinese, English, and Cantonese, as well as singer-timbre cloning, cross-lingual synthesis, and lyric editing while retaining natural prosody. Preprocessing tools handle vocal separation, dereverberation, F0 extraction, voice activity detection, and lyric and note transcription. A MIDI editor can be used to adjust lyrics, phoneme alignment, pitches, and durations before synthesis. Soul-AILab provides singing-generation and vocal-conversion demos, plus a separate MIDI editor, through Hugging Face Spaces. The repository also supports local inference with Conda, Python 3.10, pip-installed dependencies, and web UI scripts. Code and weights use the Apache 2.0 license. Maintainers caution that automatic preprocessing may misalign singing with lyrics and notes, so manual correction may be needed.
Who it is for
SoulX-Singer is suited to researchers and developers working with singing synthesis, voice conversion, or MIDI-based control. It offers both online demos and a local deployment route, but automatic preprocessing may need correction.
What is good
- Generates voices for unseen singers without fine-tuning.
- Controls pitch, rhythm, and expression with F0 or MIDI.
- Supports Mandarin Chinese, English, and Cantonese.
- Provides vocal separation and singing transcription tools.
- Code and model weights use the Apache 2.0 license.
What to know first
- Automatic preprocessing may misalign audio, lyrics, and notes.
- Local inference uses Conda, Python 3.10, and pip dependencies.
- Unauthorized impersonation and deceptive audio are prohibited.
Verdict
SoulX-Singer offers singing synthesis and conversion with several control and editing options, along with demos and local inference. Plan to review preprocessing results and respect the project’s consent and impersonation restrictions.
SoulX-Singer plans and pricing
All plansCompared on AI song cover generators
- Voice cloning
- Yesgithub.com
- Vocal input
- Yesgithub.com
- MIDI support
- Yesgithub.com
- Stem export
- Yesgithub.com
- Supported languages
- 3 languagesgithub.com
- Export formats
- MIDIgithub.com
- Commercial use
- allowedgithub.com
Facts
- Core function
- SoulX-Singer is a high-fidelity zero-shot singing voice synthesis model for generating realistic voices for unseen singers.github.com · 1 Oct 2026
- Pitch and score control
- It supports melody-conditioned F0-contour control and score-conditioned MIDI-note control for pitch, rhythm, and expression.github.com · 1 Oct 2026
- Voice conversion
- SoulX-Singer-SVC converts raw singing audio into a target singer’s voice while preserving melody, rhythm, and lyrics without lyric or MIDI transcriptions.github.com · 1 Oct 2026
- Zero-shot operation
- The model generates voices for unseen singers without fine-tuning or per-speaker fine-tuning.github.com · 1 Oct 2026
- Languages
- The system supports Mandarin Chinese, English, and Cantonese.github.com · 1 Oct 2026
- Training data
- The project reports more than 42,000 hours of aligned vocal, lyric, and note data.arxiv.org · 1 Oct 2026
- Editing and cloning
- Features include singer-timbre cloning, cross-lingual synthesis, and lyric editing while preserving natural prosody.github.com · 1 Oct 2026
- Preprocessing
- Its preprocessing toolkit performs vocal separation and dereverberation, F0 extraction, voice activity detection, lyrics transcription, and note transcription.github.com · 1 Oct 2026
- MIDI integration
- Generated metadata can be exported to MIDI, edited for lyrics, phoneme alignment, pitches, and durations, and imported back for synthesis.github.com · 1 Oct 2026
- Web access
- The maker provides a SoulX-Singer singing-generation and vocal-conversion demo on Hugging Face Spaces.huggingface.co · 1 Oct 2026
- Local deployment
- The repository supports local inference through Conda with Python 3.10, pip-installed dependencies, and local WebUI scripts.github.com · 1 Oct 2026
- Model distribution
- Pretrained synthesis, conversion, and preprocessing models are downloaded through Hugging Face Hub commands.github.com · 1 Oct 2026
- License
- The code and model weights are released under the Apache 2.0 license for researchers and developers to use.github.com · 1 Oct 2026
- Usage restrictions
- The maker asks users to respect intellectual property, privacy, and consent and prohibits unauthorized impersonation or deceptive audio.github.com · 1 Oct 2026
- Support
- The project lists three contact emails and invites technical discussion through WeChat or Soul app groups.github.com · 1 Oct 2026
- Purpose
- SoulX-Singer is a high-fidelity zero-shot singing voice synthesis model for generating realistic voices for unseen singers.github.com · 1 Oct 2026
- Control modes
- It supports melody-conditioned F0 contour control and score-conditioned MIDI note control for pitch, rhythm, and expression.github.com · 1 Oct 2026
- Dataset scale
- The stated training dataset contains more than 42,000 hours of aligned vocals, lyrics, and notes.github.com · 1 Oct 2026
- MIDI editing
- A MIDI Editor supports editing lyrics, phoneme alignment, note pitches, and durations before inference.github.com · 1 Oct 2026
- Online access
- Soul-AILab provides a running SoulX-Singer demo on Hugging Face Spaces and a separate running MIDI Editor Space.huggingface.co · 1 Oct 2026
- Deployment
- The repository can be cloned, installed with Conda and pip, and run locally through Python web UI scripts.github.com · 1 Oct 2026
- Notable limitation
- The maintainers warn that automatic preprocessing may misalign singing audio with lyrics and notes and recommend manual correction.github.com · 1 Oct 2026
- License and safety
- The project uses Apache 2.0 and asks users to respect intellectual property, privacy, and consent and avoid unauthorized impersonation or deceptive audio.github.com · 1 Oct 2026
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Sources
- github.com/Soul-AILab/SoulX-Singer· checked 1 Oct 2026
- arxiv.org/abs/2602.07803· checked 1 Oct 2026
- github.com/Soul-AILab/SoulX-Singer/blob/main/prepr· checked 1 Oct 2026
- huggingface.co/Soul-AILab· checked 1 Oct 2026
- huggingface.co/spaces/Soul-AILab/SoulX-Singer· checked 1 Oct 2026