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license: cc-by-nc-4.0
library_name: transformers
pipeline_tag: text-to-audio
tags:
- music-generation
- symbolic-music
- abc-notation
- mirror
---
# YuE2 — Mæstræa mirror
A byte-identical mirror of the YuE2 release, laid out in lanes so each component
can be fetched on its own. **Nothing here is original work.** It exists so
Mæstræa can pull the LM and a decoder in one request instead of stitching
together several upstream repositories.
If you are not using Mæstræa, prefer the originals — they are the canonical
source and carry the authors' own documentation.
## Attribution
YuE2 is by the **[M·A·P](https://huggingface.co/m-a-p)** team (Multimodal Art
Projection) and its collaborators. Per the YuE2 weight licence, the attribution
for these files is the model name and its source repository:
| Lane | Model | Source |
|---|---|---|
| `lm/` | **YuE2-3B** | https://huggingface.co/m-a-p/YuE2-3B |
| `vae/` | **YuE2-Vae** | https://huggingface.co/m-a-p/YuE2-Vae |
| `vae_legacy/` | **YuE2-Vae-legacy** | https://huggingface.co/m-a-p/YuE2-Vae-legacy |
| `sheetsage2/` | **SheetSage2** | https://huggingface.co/m-a-p/SheetSage2 |
| `mert2/` | **MERT-v2-FullSong** | https://huggingface.co/m-a-p/MERT-v2-FullSong |
Upstream code and documentation: https://github.com/multimodal-art-projection/YuE
## Licence — non-commercial
All weights in this repository are licensed **CC BY-NC 4.0**
(Creative Commons Attribution-NonCommercial 4.0 International):
- **Non-commercial use only.** You may not use these weights, or music made with
them, for commercial purposes.
- **Attribution required.** If you share what you make, identify YuE2, the model
name, and its source repository.
The full licence text is in `MODEL_LICENSE`, unmodified from upstream. YuE2's
*inference code* is separately Apache-2.0; third-party components inside the VAE
(Oobleck / stable-audio-tools and SnakeBeta / BigVGAN, both MIT) retain their own
licences — see `THIRD_PARTY_NOTICES.md` and `licenses/`.
Mirroring is done under the CC BY-NC grant to reproduce and share the licensed
material for non-commercial purposes. No file has been modified; integrity can be
checked against each lane's `weights_manifest.json`, which is upstream's own.
## Verifying
Each lane carries upstream's `weights_manifest.json` with SHA-256 digests:
```python
import hashlib, json
from pathlib import Path
lane = Path("lm")
manifest = json.loads((lane / "weights_manifest.json").read_text())
for name, meta in manifest["files"].items():
h = hashlib.sha256()
with open(lane / name, "rb") as f:
for block in iter(lambda: f.read(8 << 20), b""):
h.update(block)
assert h.hexdigest() == meta["sha256"], name
print("all files match upstream")
```
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