What is the name of the song on the Guitar Hero: On Tour commercial for the DS?!

Its a weird commercial, like 2 people are playing the game, and it has some weird backgrounds, like a giant robot, and at the end a squirrel says "Go forth and rock"!.!.!. Sounds weird!.!.!. I think the song sounds like something from Nirvana, but I'm not sure!.!.!.Www@Enter-QA@Com

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