[More Cowbell]

The 80s one coming out actually has some great songs on it. The only catch is that stuff that happens with Guitar Hero when it's "Made Famous By" meaning that the original vocals aren't on it.

Most all of the songs on Guitar Hero are by a cover band of some sort, for which it is labeled 'made famous by' instead of 'as performed by' when it's the real deal. Some of the covers sound almost just like the real band, and others not so much. The only band I can think of right now that actually performed its own song was Primus, on Guitar Hero 2. There may be others that I'm just not remembering, too.