[scheeseman486]

They actually wouldn't, since they'd be sampling the new arrangement. They could reconstruct a new, similar sounding arrangement based on the original samples, but it'd be have to be different enough to that new arrangement so as not to be considered derivative of it.

That also applies to generative AI, pure output may not be copyrightable but as soon as you do something beyond type some words and press a button, like doing area-specific infills and paintovers, which involve direct and deliberate choices by a human, the copyrighted human-driven arrangement becomes so deeply intertwined with the generative work that it's effectively inseperable.