That's assuming that what we describe as "artistic" is not the result of processes that neural network can emulate reasonably well. But even if that were the case, I'd argue that 99% of music is rehashing previous. Hell, that's exactly what I want from most of my favorite bands when they release a new album, I just want more of what I liked before, maybe with a few new things thrown in but it's extremely unlikely (more like never) that I end up enjoying new albums where the band makes very different music than previous albums.