I played one at the science musuem (don’t remember the name of it) in St. Louis a few years ago. This was before I ever started playing harp, so I was really excited about it. I was a bit disappointed, though, to find that the part of the harp that should have sounded lower was the high range, and vice versa. I was flabbergasted that some clever scientist who created it could have missed such a basic concept (big end = low, small end = high). I’m sure he never saw a real harp. It was about the size of a lap harp, and was bright, bright yellow. I also couldn’t see the lasers. It would be interesting to find one again and see what I could actually play on it. It also had one button that changed the MIDI sound that came out, which made for some pretty funny-sounding glissandos…