Abstract Programming? Structured Music?

People sometimes claim that programming is an art (me, I am happier to regard it as a craft, notwithstanding the fact that one of computer science's greats is writing a book called The Art of Computer Programming). If the parallel were clearer then presumably we'd be able to do abstract programming (people do abstract visual art, right)? What the hell would that represent?

All of which is a rather feeble introduction to a few of my brother's abstract images. David has way more talent in the arts than I do (he's also a very talented musician). Since I find both his art and his music appealing, and since he is currently trying to make it more accessible, I wanted to find out whether his work generally appeals to geeks, or is it just my starry-eyed fraternity that makes me like his work?

Since this blog is mostly read by geek (when it's read at all ...) it seemed like a good place to ask the question. So, what's the answer? Comments, please.