The funniest thing here is that unless I'm misunderstanding something, it's fed with music from other sources and spits out a new piece - didn't they do a Star Wars demo?
They say human "intervention" but the starting ingredients, listening to some demos a while back, was clearly existing pieces, so there's no human intervention when you hit go....but there's huge human intervention at the outset, and I'm frankly suspicious that the orchestration is being helped somewhat in the demos.
But no matter....the moment this is used to create something that's clearly heavily inspired by another piece - because that's what it will be used for because that's what people will want from it ("this meets that") - that entity will sue, and in discovery will subpoena the "ingredients" put in to make the piece as well as depose the individuals involved.
And at that point it will become the easiest copyright case to win in history, because you fulfill instantly the intent part, proof that the original work had been heard, proof that it is derivative, and they're quite literally toast at that point. Unless it's only fed with public domain sources, they will be sued by the first person who spots a similarity and because they apparently retain ownership of the music, they'll be liable. Instantly.
Also doesn't this violate most virtual instrument licenses, which rarely license it to a computer and only to a person?