SoulX-Singer audio model

SoulX-Singer is an open source AI model that creates realistic singing from text and melody that was released mid February 2026. It can sing in voices it has never trained on before, which people call zero shot. The system comes from Soul AI Lab, working with Tianjin University and Northwestern Polytechnical University in China.

The model focuses on making singing that sounds real and controllable. It works in Mandarin English and Cantonese. Users can guide pitch rhythm and expression using melody curves or MIDI scores. So you are not stuck with one input style.

Unlike many text to speech tools trained on one singer, this one adapts to new voices on the fly. It keeps audio quality high while doing that. And it aims to handle real world use not just lab tests.

Core features.

• Zero shot singing. It creates singing for new voice identities without retraining.
• Multi language support. It trains on over 42000 hours of aligned singing data.
• Flexible input. It accepts F0 melody curves or MIDI scores.
• Expression control. You can adjust rhythm pitch and dynamics for more feeling.

Extra tools.

• Timbre cloning. It keeps a singer like voice style across languages and genresque shifts.
• Lyric editing. You can change words and keep the musical flow.
• Cross language singing. It separates voice identity from language content.
• What it outputs.Singing audio from text and melody. It supports MIDI controlled vocals and keeps a consistent virtual singer tone. But it does not create full music tracks with instruments or any video.

Research background.

The team also shared a preprint titled SoulX-Singer Towards High Quality Zero Shot Singing Voice Synthesis. It describes training on more than 42000 hours of singing and sets up tests to measure zero shot results. The design targets strong performance and expressive output at an industry level.

In short SoulX-Singer blends control sound quality and open access. It focuses only on vocals and pushes zero shot singing forward in a clear hands on way.