There's no way I'm gonna call this "music", but it can go in my "fun" blog-category. Playing songs with your hands... Here's Michael Blowhard with the story. And a bunch of extra "manualist clips" from YouTube. Take for instance James Brown's "I feel good"- this guy certainly looks like having fun :-). You decide whether these people face a creativity crisis (though it's gotta be a chronic one given that it goes on for almost 4 decades!) or it's more than that :-).