Beyonce was among the many artists in the house last night at husband Jay-Z’s ‘Answer The Call’ 9/11 charity concert in New York. The 28 year old superstar surprised viewers with a performance of ‘Diva’. Put simply, Ms. Knowles-Carter did the damn thing; she actually killed it. Watching this kinda had me a little irritated at the fact she hasn’t performed this live anywhere other than on tour. As not the biggest fan of the song, Bouncy, as usual in such cases, manages to sell it like her life depended on it, with her stellar live performances. Hate it or love it, she really is the ‘baddest chick in the game’…