Holy Good Vibrations, Batman! Where were you guys thirty or so years ago? Sitting on your hands, perhaps, as I was, while other people my age who had the time to practice were making music onstage and loving every groupie, er, minute of it. This wondrous machine, unit, device, laser harp ... takes music participation electronics to a whole new level. And it's not just timing, as you see with Guitar Hero, et al, but as this dude is demonstrating there's a lot of room for improvisation, and I can see where this would be enormously beneficial to handicapped children who could benefit from the joy of making music without the normal limitations. I'll trade you two acoustic guitars for one. Deal? Okay, and all my old vinyl records ... and a piano ... if you'll move it out of my garage.