Co-founded by Alicia Keys, Keep a Child Alive held their Black Ball in NYC last night to raise in support of families affects by HIV/AIDS. Along with Alicia, the night included performances by Usher, Mary J. Blige, and Norah Jones, to name a few. For $100,000 you could've bought yourself a "Nirvana Table" for 10 guests that basically gave you 'platinum' access and recognition. Otherwise, individual tickets set you back $5,000. For more info, visit the Keep a Child Alive website.