Friend of The Gadgeteer and music man extraordinaire Mark Rosengarten sent me an email tonight to tell me that he’s waiting to take delivery of a Tenori-On. Since I had no clue what he was talking about, I went directly to my BFF Google for the 411. The Tenori-On is a really wild looking musical instrument from Yamaha. It has a 16×16 matrix of LED switches that you touch to play different tones. It looks like a Lite-Brite for the 21st century and could be a lot of fun to play with. I’m sure Mark will come up with a cool song to feature it. In the mean time, here are some Tenori-On YouTube videos to check out.