Open-source & model notices

Licenses & attribution

LyricPatch stands on research and open-source work. This page identifies the principal components, required notices, modifications, and the commercial-license condition that must be monitored.

Effective August 27, 2026United States launch

Required attribution

YingMusic-Singer-Plus by ASLP-lab, licensed under CC BY 4.0; modified for hosted lyric editing.

Powered by Stability AI

Principal notices

YingMusic-Singer-Plus

Creative Commons Attribution 4.0 International (CC BY 4.0)

By ASLP-lab. Modified for hosted lyric editing, private job execution, duration-preserving generation, loudness matching, and non-destructive web export.

Source and license

Stability AI model component

Stability AI Community License

The YingMusic VAE component is used subject to Stability AI’s license, revenue threshold, registration, attribution, and dynamically incorporated Acceptable Use Policy.

Source and license

MelBandRoformer

MIT License

Used server-side for vocal/accompaniment separation. Its copyright and permission notice are preserved in the inference distribution.

Source and license

Whisper and faster-whisper

MIT License

Used server-side for automatic speech recognition. Required notices are preserved with the deployed worker.

Source and license

SOME and F5-derived code

MIT-style notices

Portions of melody and synthesis code derive from upstream projects. Their notices and modification records are included in the deployment’s third-party notices.

Source and license

phonemizer / eSpeak NG

GPL components

These components run only as server-side programs and are not distributed to users. Their source and license notices remain available from their upstream projects.

Source and license

Complete license texts

The complete, controlling texts are available from the CC BY 4.0 legal code, the repository’s YingMusic license notice, and the complete Stability AI Community License. The production image must also ship a machine-readable SBOM and verbatim notices for every pinned Python, CUDA, FFmpeg, and native dependency.

Commercial-use condition

Commercial use of the Stability AI component requires registration with Stability AI. The Community License terminates when the licensee and affiliates exceed US $1,000,000 in aggregate annual revenue. LyricPatch’s owner has set an internal trigger to begin enterprise discussions at $750,000 trailing annual revenue and must obtain an enterprise license before crossing the license threshold.

Training-data provenance disclosure

The YingMusic paper identifies Emilia pretraining data and internally licensed singing data. Emilia’s published dataset terms restrict dataset use to non-commercial purposes. The model publisher separately released the weights under CC BY 4.0, but that does not provide LyricPatch with a warranty that every training-data right is cleared for commercial deployment. The owner has accepted this unresolved provenance risk; LyricPatch does not characterize the model’s training provenance as legally cleared.

Modifications

LyricPatch separates the research interface into private web jobs; pins model revisions and separator checksums; supports consumer edit regions up to 6 seconds and recommends 3–4 seconds for quality; generates 44.1 kHz stereo output; duration-matches and loudness-matches generated vocals; clamps gain; applies 20 ms equal-power boundary crossfades; stores accepted edits in a manifest; and renders once from an untouched original. These modifications are not endorsed by ASLP-lab or Stability AI.