But what you really care about is playing the game. Well, a Harmonix quintet (yes, five players ... we'll call the fifth member "Pete Best") showed off the game, playing instruments custom-made for the game, including John Lennon's Rickenbacker 325 guitar, Paul McCartney's Höfner bass, George Harrison's Gretsch Duo Jet guitar and Ringo Starr's drums with Ludwig kick-drum head. Five people were used because it's the first "Rock Band" game to include three-part harmonies, and you can actually play with up to a Fab Sextet.

For more on "The Beatles: Rock Band" demo, including footage from the game, head to our Multiplayer blog.

"All the pictures of me and Em, I burned them," he raps, referencing Slim Shady. "So there ain't no proof I walked through 8 Mile/ And so since it ain't no Proof, I'll never walk through 8 Mile/ Sometimes I think about my life with my face down/ Then I see my sons and put on my Kanye smile."

What do you think he's talking about? Let us know below...