For the most part, I don't think WiiMusic is suppose to be for 'Hardcore' gamers or suppose to 'teach' music to people. Miyamoto said this. Just as WiiFit isn't suppose to help you lose weight, WiiMusic is just to get people interested in music and to allow you to do something with different instruments you wouldn't be able to play without hours and hours of training otherwise.
Does that mean people will want to play it and it will take off? Not necessarily. I can play various instruments from Clarinet to Trumpet and was in Band for 5 years in School. But I find games like Rock Band and Guitar Hero to be huge gimmicks to allow people to 'feel' like they're playing Instruments in a game environment. In the same way, WiiMusic can feel like one of these games, but only if you let it. As WiiMusic doesn't encourage you to 'feel' like you're a rock star. Just imitates various instruments in a game like environment and wants you to experiment with them.
But do I advocate WiiMusic as a good game over Guitar Hero and Rock Band? Not really. Because in all ways, this experimentation gameplay of WiiMusic makes the game sort of bland and limited. Its not so much a game as an elevated tech demo. A Synthesizer with a Wiimote.
Six upcoming games you should look into:
