Terribly clever and moderately challenging, or just a bit crap?

So I've been knocking some ochestral sketches together and using the left over bits, wound up with this. Can't work out if it's a mildly challenging, contemporary wonder or if it's actually just a bit lame. Click the play button below and have a listen for yourself - (please excuse unmixed, unbalanced, ropey midi sounds ((I was just sketching)) and give it a second to load).