Well another AI model created by Stability.ai called Dance Diffusion [0] wasn't widely reported with all the fanfare and that was deliberately trained on "public domain data", "Creative Commons-licensed data" and "data contributed by artists in the community." which is opt-in.

> A further perspective is that stable diffusion may have been trained on copyrighted images in the first place even though it may not exactly reproduce an image in it's training corpus.

Given that watermarked copyrighted images sometimes come up in the outputs, I'm sure that is the case. Had that been trained on copyrighted music, the whole company would be sued to the ground and the model would never be released without permission or no attribution.

So for StabilityAI, it is fine to break the copyright of digital artists and use their work without their permission, but not fine to do the same to copyrighted musicians and artists and instead generate music from public domain sources. I'm sure voice cloning requires permission from the person as well otherwise there would be more legal issues.

The same goes for Copilot training on AGPL code outside of GitHub including StackOverflow, etc. but IANAL.

[0] https://techcrunch.com/2022/10/07/ai-music-generator-dance-d...