Let me preempt the drama - you will probably have to maintain your own fork if you do that, though.

Even if you discount all the various LLM opinions (which you may yet get to hear), there is no clear precedent showing that you actually have copyright over things written with an LLM (and at least EU has an official document with legal interpretation to contrary), so the safest best for an OSS project is just not to accept any contributions that are known to have been made with an LLM. You don't want to wake up one day to your license being null and void.

That's not how western copyright (currently) works.

The composer owns the rights to the piece. If you were to perform and record it, they'd actually own the full copyright to that recording.

If you did something so transformative in your performance that your part could be considered an artistic work of its own, you'd have the copyright for that part only. You would still require explicit permission from the composer to do anything with your recording. (Though they wouldn't automatically own your whole performance anymore.)

If you transformed it so far as to become a distinct work that can stand independently, only then would you become the copyright holder of that work.

Reviewing what some fascist's slop machine remixed from pirated code is not transformative in any way. It doesn't even qualify for partial copyright and good luck finding all the copyright holders to acquire licenses from even in that case.

If this sounds insane to you, go read up on copyright; it's part of the game – whether you want it or not.