With the Disturbed songs - keep in mind that many people, including myself, took advantage of the fact that there was only one code to download the songs with and got 2 free songs. Without the promotion and the discount, the stats wouldn't be close to where they are now. Don't get me wrong, it's obviously some of the best-selling DLC yet, since Perfect Instanity sold 60K. But that should definitely still be taken into consideration.
Would you pay for music by Beck?
What if you heard he owned a plane made of gold?
Good, because he needs the money.
I just want some hair metal and 90's music
I am currently away on leave, traveling through time and will be returning last week
I expect big numbers from Dream Theater and Megadeth next week. Half-price, and two of the most requested bands. It should hover around the SOAD numbers, if not more.
 Brand New
 Manchester Orchestra
 The Doors
[X] CCR Masters
I guess another factor (aside from non-guitarist heathens like me) are those with principle who, if they can't beat it on expert, won't beat it at all. I still have scores for all my DLC songs on Drums...except Burn. All these T9 songs and T7 Burn still whomps me. (though I can pretty much always get through the first roll without overdrive, I get tired at around 75-80%. sigh...)
it's "only" faster, afterall...
AN-I-MAL and Virtuoso. (and now a Virtuous Animal, ESL Drums + Vox on expert )
Perfectly fine with no hair metal at all ;p
Having said that, I dont consider Twisted Sister hair metal ;]
More metal in Rock Band:
Check out my videos. http://www.youtube.com/user/FultonPub