I haven't watch this 26 minutes long video but I have already seen AI music being used as like theme song of indie games and people do bot realize it's AI, even under a Youtube video that just upload the music.
EDIT: The video only claims that AI would not be able to pass a "Musical Direction Test", but a blind Turing test only on output, yes.
EDIT: The video only claims that AI would not be able to pass a "Musical Direction Test", but a blind Turing test only on output, yes.