Consider youtube poop, Im serious. Everything clip in them is sourced from preexisting audio, and mixed or distorted in a comedic format. You could make an AI to make youtube poops using those same clips and other “poops” as training data. What it outputs might be of lower quality, but in a technical sense it would be made in an identical fashion. And, to the chagrin of Disney, Nintendo, and Viacom, these are considered legally distinct entities; because I dont watch Frying Nemo in place of Finding Nemo. So why would it be any different when an AI makes it?