Credits & licences

Swara Sound stands on the shoulders of open-source AI research. These are the models and libraries that make it work, and the licences they're used under. Thank you to everyone who built and shared them.

Swara Engine - songs and instrumentals

The Swara Engine is a browser version of these open models, converted and compressed by Swara Sound to run on your own graphics chip. Their weights are downloaded from models.swarasound.com and run entirely on your device.

• ACE-Step 1.5 (turbo) - the music generation model and its audio decoder. © 2026 ACEStep. github.com/ace-step/ACE-Step-1.5 · Hugging Face · MIT License (full text below).
• Qwen3-Embedding-0.6B - reads your style description and lyrics. By the Qwen team, Alibaba Cloud. Hugging Face · Apache License 2.0.

Swara Sound is not affiliated with or endorsed by the ACE-Step or Qwen teams. Our converted versions differ from the originals (compressed to 4-bit and half precision for the browser), so they can sound slightly different.

Free Text to Speech

• Kokoro-82M - the text-to-speech voices. By hexgrad. Hugging Face · Apache License 2.0. Run with kokoro-js (Apache License 2.0).

Vocal remover

• MDX-Net vocal separation models from the Ultimate Vocal Remover project.

Libraries

• ONNX Runtime Web - runs the AI models on your graphics chip. © Microsoft. GitHub · MIT License.
• Transformers.js - text tokenizers. © Hugging Face. GitHub · Apache License 2.0.
• lamejs - MP3 encoding in your browser. GitHub · LGPL 3.0.

ACE-Step licence

MIT License

Copyright (c) 2026 ACEStep

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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