I think the non-research value will be like the value of chess computers to chess communities. It enriches the community, helping them develop their craft, but the community is still a community of humans.
http://theconversation.com/how-computers-changed-chess-20772
I can think of a few ways machines have beaten humans before, but where human experience is still valued in a way the machine achievement isn't. Modern weapons are valued for what they do, and they can beat any human, but the human practice of martial arts is still valued despite that fact. A player piano with a roll performed by Rachmaninoff will deliver an excellent reproduction of a historic performance, but I'd still rather listen to my friend play, even if what I'm hearing comes down to objectively worse key pressing.
Music is indeed a language, so while it evolves, it still requires a network of meaning to rely upon. So doing something wild like music in 5/6 time will for the most part, bounce off people's heads and not resonate with meaning.
Entire creative industries will be automated away with this, in time.