I've seen these things and the best part is the music doesn't even remotely sound like that. It sounds more like an 8-bit, pre-polyphonic ringtone sample.
What's great is that the only way the people in that commercial have heard those four songs is while rolling their eyes while their dad puts on KZOG, THE station for CLASSIC ROCK
See, the thing is, the actual Guitar Hero line is doing a fantastic job of running this shit into the ground, like the palm-sized Guitar Hero...
http://www.uberreview.com/2008/04/guitar-hero-is-only-a-belt-c lip-away.htm
And the Guitar Hero playable belt buckle...
http://www.amazon.com/Guitar-Hero-Belt-and-Amplifier/dp/B000YM SSQ2