Mary J. Blige to sing national anthem at Derby

In this image released by Hope for Haiti Now, Mary J. Blige performs at "Hope for Haiti Now: A Global Benefit for Earthquake Relief", on Friday, Jan. 22, 2010, in New York. (AP Photo/Evan Agostini/Hope for Haiti Now)

April 23, 2012 9:23:01 AM PDT
Grammy winner Mary J. Blige is expected to sing the national anthem at this year's Kentucky Derby.