Good news everyone!
Wii Music is 50% higher in NPD than on the U.S VGChartz estimate! (193K vs 297K)! It is selling 50% faster than assumed in the U.S (well, for that period at least) than we previously believed.
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS