Hey look, lots of bashing of Wii Music! How original!
Seriously, the bashing is almost as silly as AC. The game for one is not a bad game and for Jonny's information (and others) my family enjoys playing BOTH Wii Music and games like Rock Band. They are completely different experiences and each has their pros and cons. Wii Music has some fun mini games, the conducting is great (at least I enjoy it) and while the instrument complexity is low you can still do some great stuff with songs.
Worse game in 10 years? ROFL, did someone forget Wario Master in Disguise? Also the Wii Music sales look like they are going to be steady, so it is far from a failure even if many of you want it to.