The UKSC (U.K. Songwriting Contest) has provided some excellent information regarding COPYRIGHT when using AI (Artificial Intelligence).
Here is the link to their Blog, where you can find some valuable insights on this topic:
An excerpt: SONG OWNERSHIP
At the UKSC we have been studying AI carefully. We have looked at the various AI platforms and developments in depth and we have consulted with lawyers and organizations about copyright issues. The current situation today, as we understand it, is that legally the AI platform retains copyright on all material it creates. Keep in mind that the AI created work is legally known as the AI "output". "Output" is the crucial term here. The bottom line, at this time, is that it is becoming clear that all music or lyrics that an AI platform creates is legally owned by that platform and not by the person who creates it through their "input". So if you are using AI make sure that you don´t get carried away thinking that you wrote the masterpiece that you end up with. Carefully read the small print hidden in the terms and conditions of the software or platform you are using you will probably discover that the output created by AI is not owned by you. And often even your input isn´t owned by you either.