I'm waiting for Rock Band to come out here, but I can play through Expert songs on GH, and even get 100% on a few at the moment
I may have to check it out when it does, but no release date has been confirmed.
Rock Band reminds me of IIDX, so I feel like I'd have the capability to do rather well.
That drum solo doesn't seem that hard. Mostly its built from solo's you can create yourself, which is what those large ribbon parts are that carry on for a while.
The main parts, rather repetitive.