I have never seen anything like this before, but I tink it's great!
It was on the NCN forum,and together with it were some videos from other performers, Lisa Wong and Dan Dunn. But this Denny guy was by far the best.
I believe he is called an 'artist performer, and it makes me think of Jackson Pollock, the famous action painter of the fifties.
I think this video shows that art and music can go together very well.
In my case it's very obvious: when I work live, I normally get a 'flow' when the music or dj is great, whereas when the music is bad my caricatures are often too.