My Son sent me this video. It's amazing how quick these puppies respond to the singing. I think music and sound are very powerful in their effect on us. I wonder if the intention of the creator of the music has an effect on the outcome?
I try to observe the effect on my body system and emotions on a whole after listening to music. I listen to all sorts of genres but have listened to a lot of metal over the years.
Nowadays some of it is too jarring to my system but others still work really well. I've gone through my files and playlisted everything that enhances body and mood.