^Language in Rock Band is bizarre. They censored the repeated use of the word "God" out of Fallout Boy's "This Ain't a Scene..." but left the line "They aren't sluts like you" in "Celebrity Skin".
My European copy has a clear notice on the back of the box stating that the game contains strong language too.
I like firehawk
's suggestion - all the songs should be unlocked for Quickplay (single and multiplayer). Otherwise, people buy this to have a laugh with the family at Christmas only to find they can only play a few of the songs.
I know games are supposed to be about the challenge, but I wouldn't be too happy if I played Half-Life 2 on Easy only to be told that after being transported out of Nova Prospekt I'd have to play the game from the start again on Medium to go any further.