This is really a crazy world where anything is possible.
Have you ever thought after training and getting all the muscles, one can use these muscles to synchronise with some nice music.
I know there were computer editing of the head but the movement of the muscles really went well with the music.
Without a good regular body workout, I doubt anyone can put up such a show.
Have fun watching the muscle dancing with singing and music for humour.
Music can delight our hearts indeed.