A friend sent me through these awesome websites. You just go on, and the keys you press on your keyboard make different sounds. Click on the images to visit the sites.
The first one is the lyrics of Daft Punk's "Harder, Better, Faster, Stronger":
The second is just like a drum machine with some basic samples and synthesiser sounds:
I've been having fun with this stuff for the last few hours. Great stuff. If any of you have any other examples of these kinds of sites, please send them through to me. Enjoy!