I have literally NO IDEA whether I'll be able to come up with something in two hours or not, but I thought I would give it a go anyway... so don't be surprised if there's no follow up!
So... I only have about 30 seconds of a song done, so not worth posting at this point. It was fun to have a go though and I quite like what I have so far, I will definitely continue to build on it.
Well I finally did something with the piece I started. http://forums.synthstrom.com/discussion/2313/first-attempt/