This one is pretty short, eight or nine minutes, and I think it's actually just an excerpt from a longer presentation. What there is of it is interesting, though. Daniel Levitin argues that music came before language. He also mentions that one of the things that sets us apart from animals (or maybe just other mammals) is the ability to synchronize our bodies to music.
This makes me want to turn on some music and try sitting perfectly still, just to see how hard it really is. I listen to a lot of music on my own, and it's not like I dance to it most of the time, but I don't really know if I'm unconsciously moving part of my body in time to the music.