This little thing is pretty sweet. I remember having a little Casio keyboard as a kid that was little more than a toy. At nearly the same size, the OP-1 from http://www.teenageengineering.com is a full blown production unit (albeit an extremely limited one). I have to admit, it sounds pretty good too. It would be nice to have a little device to tap out song ideas on w/o having to get out my laptop and firing up Ableton Live. At $849 USD I will have to just admire from a distance for now.