I'm so used to writing Evanescence as Evanuisance because, well, that's kind of what they are. My Firefox spell checker even recognizes "Evanuisance"; yeah, I got that bitch trained. "Evanescence" is actually a real word, just not commonly used; it basically means the act of evaporation. (Sadly Evanescence didn't evanesce, and now they're in Rock Band. C'est la vie.)
Anyway, we got 3 tracks by Evanuisance: Bring Me to Life (feat. Paul McCoy of 12 Stones), Call Me When You're Sober, and Weight of the World. The latter I don't think is even a single; all I've heard from their new album is "Call Me" (and the radio station goes nonchalantly back to their first album... sure sign the new one sucks) but it sounds fun, so we get it. And they give you a break when you buy the whole pack, so some smart shopping there.
As for Iron Maiden, these guys kicked your grandpa's ass so many years ago and they still rock to this day. However, they do kinda suck live, Bruce Dickinson has mostly lost his voice. Doesn't stop me from getting the live version of "Hallowed Be Thy Name", probably their best song after "Rime of the Ancient Mariner" which is too long for Rock Band anyway. So we've got Hallowed, and the studio versions of "Run to the Hills" (a cover was on Rock Band 1, and did not export with the others, so it'll be nice to have that again) and "Number of the Beast" (a cover we've had as DLC for a while). Rounding out the four is the semi-poppy "Two Minutes to Midnight", which should be fun to sing.
Anyway, "Midnight" is about to finish, and that's the last of 'em, so I'm gonna go get my ass kicked on vocals (I'm up to Hard now) and Jen's gonna get her ass kicked on drums.