Guitar man

I just saw this great Commodores vid on VH1 Classic and was concerned by the sheer weirdness of the dude playing the guitar on the right of the screen about a minute in. First of all, he's holding his instrument vertically, which I think we can safely say isn't normal. And his facial expressions are something else as well. Not sure the grainy reproduction on youtube does them justice, but you may get some of the vibe. Nice song though.