>Not a lawyer, but I'm pretty sure that purely algorithmically generated music isn't copyrightable.
As far as I can tell, that's not always true. For now it seems largely context-specific, provided that a human wrote the software generating the output. There's a relatively well-known legal case of someone writing numerological software to generate eschatological texts, where the texts themselves were found to be copyrightable.
The USPTO is currently soliciting comments on whether and under what circumstances AI-generated outputs should be copyrightable [1].
As far as I can tell, that's not always true. For now it seems largely context-specific, provided that a human wrote the software generating the output. There's a relatively well-known legal case of someone writing numerological software to generate eschatological texts, where the texts themselves were found to be copyrightable.
The USPTO is currently soliciting comments on whether and under what circumstances AI-generated outputs should be copyrightable [1].
[1]: https://www.govinfo.gov/content/pkg/FR-2019-10-30/pdf/2019-2...