I have a problem with my Abbey Road DLC. I just tried it out tonight for the first time and the drums cannot be heard on any of the songs... nor can certain guitar riffs and minor vocal parts. It sounds like parts of the final mix have just been cut out.
I've never had this problem in a Rock Band game before... every other song in the game works just fine. I totally regret wasting the money/points on something that doesn't fully work... any help would be greatly appreciated.