Protocol & Open-Weights Model License

This document sets forth the licensing terms, intellectual property protections, commercial use conditions, and responsible AI safety guidelines governing the use of the YuE2 foundation models, software weights, and the yue2music.com platform.

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1. Open-Weights Model License & Scope (CC BY-NC 4.0 / Apache-2.0)

The foundational model weights and architecture code of the YuE2 ecosystem are governed by the original research team's license:

• Foundation Model Weights (CC BY-NC 4.0): Weights for YuE2-3B are released by Multimodal Art Projection (M·A·P) under the Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
• Commercial Cloud Hosting Caveat: Third-party commercial enterprises cannot directly sub-license, resell, or commercialize the raw model weights without obtaining an explicit commercial license directly from M·A·P. yue2music.com is an independent community runtime and cloud studio; we do not claim to offer commercial sub-licensing of the weights to other cloud providers.
• Inference Code & Tooling (Apache-2.0): Open-source inference scripts and alignment code are licensed under the Apache 2.0 License.
• Attribution: Derived works, evaluations, and citations must maintain clear attribution to the original research authors (Multimodal Art Projection & HKUST collaborative teams).

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2. Ownership & Commercial Rights of Generated Output

We adhere to a creator-first policy regarding intellectual property, in alignment with the official YuE2 project terms:

• Your Intellectual Property: You retain ownership over any original lyrics, prompts, and bespoke musical scores you input into the system.
• Generated Songs & Audio Stems: Subject to applicable regional copyright statutes regarding computer-generated works, yue2music.com claims zero proprietary ownership over the audio files or ABC notation generated by your user session.
• Commercial Use of Generated Music: According to the official YuE2 terms, individual creators and subscribers are permitted to commercialize their generated audio tracks (e.g. streaming on Spotify, Apple Music, YouTube, background music for games, podcasts, and videos).
• Content ID & Melodic Similarity Disclaimer: While generated outputs are yours to use, neural music models cannot guarantee absolute exemption from inadvertent melodic similarity or automated Content ID claims by major platforms. Creators are advised to exercise standard due diligence for high-exposure commercial releases.

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3. Responsible AI & Prohibited Uses

To protect creators, performers, and copyright holders, users of YuE2 and yue2music.com agree never to use the platform for:

1. Deceptive Deepfakes & Impersonation: Generating musical works that intentionally imitate a living artist's unique vocal identity without explicit consent, or misrepresenting AI-generated vocals as official releases of living artists.
2. Infringement of Third-Party Copyright: Using prompts or custom input scores designed to produce verbatim replicas or substantial duplicates of existing copyrighted melodies or commercial master recordings.
3. Hate Speech, Defamation, & Harassment: Generating lyrics or vocal content that promotes violence, discrimination, unlawful activities, or defamation against individuals or protected groups.
4. Malicious Automation: Attempting to reverse-engineer, overwhelm, or launch denial-of-service attacks against yue2music.com GPU inference endpoints.

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4. Fair Use & Training Data Disclosures

The YuE2 foundation model was trained on diverse public domain, permissively licensed, and synthetic datasets. The model employs symbolic planning to compose original note progressions rather than memorizing or stitching pre-recorded audio fragments.

If a copyright holder believes that an output generated through yue2music.com infringes on their proprietary musical work, they may submit an expedited takedown notice to dmca@yue2music.com containing:

• Identification of the copyrighted work claimed to be infringed.
• Direct URL and generation timestamp of the infringing output on yue2music.com.
• Contact information and statement of good faith.

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5. Limitation of Liability

yue2music.com provides the service and foundation models on an "AS IS" and "AS AVAILABLE" basis. While YuE2 generates studio-quality 48kHz audio, we do not warrant that all outputs will meet specific broadcast guidelines or subjective artistic standards.