Tenori-on is a new type of electronic musical instrument, developed by Toshio Iwai in collaboration with Yamaha. It's interface is a grid of 16 X 16 LED-illuminated button switches, in a frame that contains a few additional controls.
This device goes on sale in the U.K. soon. There will be a lauch event this Tuesday, September 4th.
Click here to go to Yamaha's Tenori-on product page.