Evio violin simulator, works kind of like one of those Beatamania things, you play the violin along with the on screen prompt and get a score depending on how well you do. Works via motion sensors that detect if you're moving the bow across the strings right. There is also a "Evio Jr." aimed at the wee ones that has a Karaoke function.
Might seem like one a neato little gadget, but it's also expandable with extra game discs, including a Pokemon themed disc (oh God...) Looks like it could be kind of fun, and hell, it teaches you how to play the violin. Released in Japan, available for import via various Hong Kong websites. (Like the Play Asia link on the left *hint*)