Guitar Hero is better because every month, you'll be able to download new music. Even put your miis in as rockers. If you want soft music to play using yor wii remote get Wii Music. If you want to rock out with 1,2, or 3 friends get Guitar Hero World Tour. (Has also 85+ songs.)
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worldtour.guitarhero.com and Nintendo channel for Wii Music. Everything you see was typed from my internet channel on my Wii.

Let’s put it this way. Guitar Hero World Tour is a game, which requires some skill and practice to master. It has real master tracks of music.

Wii Music is a musical toy or noisemaker. If you wave your arm up, beautiful music plays, and it will always be beautiful, with literally no effort whatsoever from you. It has 60 instruments.

Here are some of them: Dog, Cat, Baby, Tree, wood.
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wii music because you have 60 instruments u can use including a guitar. You can play the drums and its really good. Guitar Hero is kind of weak anyway
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no, definitely not. seriously wii music all you do is do gestures that you would do to play a real instrument, and the moderation play level would be like once a year.

and guitar hero world tour actually has you doing something, and although it’s more expensive, you’ll definitely be glad you got that instead of wii music. also if you’re a kid, you’ll probably want wii music, but if you actually have skill, then get world tour.
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From what I gather, the games play completely different.

Wii Music is about improvisation and arrangement. you don’t need to follow the melody – but if you don’t use a good timing and differ from the melody in a musical way it will sound really bad (just watch the crappy performance at E3). So you will need skill to make it sound good. And you can change any instrument to any of the 50+ instruments in there, so there’s a huge element of arrangement there. However, the game will not give you points or punish you – if you think it SOUNDS bad, you failed.An example of when it can sound good (and a bit weird): http://wii.ign.com/dor/objects/827335/wii-music/videos/wiimusic_zelda2_101808.html

GH is about hitting the right button at the right time. There’s no improvisation – it is correct, or it’s wrong. And if it’s wrong, the music sounds wrong, and you get less points. However, there is a music making mode in GHWT which could be awsome, but my guess is that it will be more about making up new melodys from scratch rather then improvising around a default tune. Wich for some is even better!

Can’t tell you wich to get, my guess is that both are awsome at what they set out to do.

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