WEIGHTS_NOTICE.md

Model weight licensing status

Project weight license: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). This applies to all 29 project checkpoints identified in manifest.json, only to rights the licensors are authorized to grant. Credit ACappellaSet and preserve upstream attribution; indicate modifications when sharing. It does not grant additional third-party rights or change upstream license terms. The full-remix and single-clone singer-augmentation checkpoints were trained with voice-converted singer augmentation generated using Moises; their project license does not grant additional rights controlled by service providers or other third parties.

Upstream notices

Demucs source code uses MIT; preserve the Meta notice. Pretrained initialization identities and tensor correspondence are recorded in the initialization provenance.

Historical fixed and specialist training uses Music-Source-Separation-Training; preserve its MIT notice. Singer- and dual-conditioned models include fine-tuned WeSpeaker ReDimNet2 B6-LM encoder weights; preserve the upstream Apache license and WeSpeaker attribution. Project fine-tuning changes pretrained tensors. All released checkpoints are inference-only exports, retaining every separator and matching encoder tensor while omitting optimizer state, training arguments, and internal filesystem paths.

Original documentation and metadata retain their MIT license; that MIT license does not apply to model weights. Dataset audio, corpus terms, and third-party rights remain separate.