DaverJ's view on a couple of the new DLC on drums:
Buddy Holly: Quite possibly the easiest song in the game. Straight-forward beat with occasional crash, mostly single kick drums. I got through it with 5-stars on Hard at 96% first time through. A great warm-up song. **** (out of 5)
My Iron Lung: Mostly easy beat with unexpected tempo changes. Not my fav Radiohead song, but certainly not the worst and works well in a band setting. *** (out of 5)
Also recommended downloads: I Fought The Law (****), Roxanne (*****), and I HATE to admit it but My Sharona (****) is annoyingly fun to play.