Not sure I believe everything he said in the video about brain connection as music to me is more soulful than something so mechanical. Great music to me is always spiritual and the ability to portray it is brain or mind to hands.
But the point he was making corresponds to athletes in that it is visualized or in this case auralized which is really what separates great athletes or musicians from lesser performers.
How many great golfers do we hear say they visualize the shot before they make it. Many if not most.
I think Beethoven is a great example of this. He wrote songs after going deaf because he could still hear it in his head and from his years of practice new how to write it to make it sound like what he heard.