Okay, now that you've calmed down, here's a whole set of reasons to get worked-up again. More than 55 songs will be included in the upcoming sequel, 40 of which will be licensed; the rest will be independent stuff. No, we don't have a song list just yet because it's still being finalized, and licensing deals are always a touchy subject. What we can confirm is that the mix of genres will stay the same, meaning you'll get classic rock, heavy metal, modern rock, alternative, and "hair" metal. Also, the game will use the same guitar peripheral you use to play the original game with.
Wannabe rockers who own two guitar controllers will get to play a completely new cooperative mode with their buddies, where one player will simply play the lead guitar track while the other handles either the bass or rhythm tracks. Don't worry, the classic multiplayer modes you've already mastered will be in the sequel as well. Enhancements and tweaks to the single-player game are expected too, but info is scarce for now.

The current release date for Guitar Hero II is scheduled for this fall. We'll keep you updated as new details come out.