Holy crap... Aerosmith! Dream On/Sweet Emotion pro upgrade!
So, I haven't bought many songs lately, but I just might have to open up the wallet for the classic songs on this list.
Great news is that whatever exclusivity deal GH had on Aerosmith is now over, so perhaps we'll also see these songs in other games (*cough*rocksmith*cough*) too.
Edit: Yeah, somehow mind farted on this one since it's out on tuesday. Would have been great if it were out for today's rockband party though :)