I play rockband too on xbox live, usually drums. Still new to the xbox so haven't explored too many other games, but my gamertag is Miasaou for any rockband players that want an amusingly easy win.
I gotta say, anyone from here that wants to add me feel free. I'm still pretty sucky but the experience of Kodi singing..priceless. Way to rock em all out on expert!!! =D
I have a 360 and play mostly 1st person shooters. If anyone wants to add me my tag is Dark Waler. I play mostly Gears of War, CoD4, rainbow six 2 but I have 38 games for the system so if anyone wants to add me be my guest always looking for people to kill =D