The internet has been abuzz about Tenori-on, which is being called "a new digital musical instrument for the 21st century." The device was created by media artist Toshio Iwai and Yamaha and is made up of a unique 16 by 16 LED button matrix performance instrument with a visual display. It provides six different performance and sound/light modes that combine to create a rich and complex musical expression. The idea is that DJs and producers could use Tenori-On as a performance tool, adding a visual element to their music.
How does it work? You press a LED button briefly to play the sound assigned to it and at the same time the lights flash outward from the played sound. If you hold the LED button it will remain lit and will become an active note that will play repeatedly.