Crysis 2 Easter Egg

Not the original music, but i'm sure it's real since others have found it in the leaked version of the game.

http://www.youtube.com/watch?v=jRTXpncI8BI

http://www.youtube.com/watch?v=jRTXpncI8BI

With original music:

http://www.youtube.com/watch?v=uUXlCH1stNc

Watched this earlier, love it. Wish I knew about this when I was first going through the game, I would have checked it out.