In case you missed it...Check out "Run This Town" by Jay-Z featuring Kanye West and Rihannathen, "Good Life".
Crazy!
Jay Z, along with many other performers, performed at Madison Square Gardens for the unfortunate people who were victims of 9/11.
I think this is Rihanna's first major performance since the blowout between her and Chris Brown.
And, no one can touch Kanye's music!