Jennifer Hudson is set to take the stage and sing the national anthem at the Super Bowl on February 1 in her first public appearance since the tragic murders of her mother, brother, and young nephew. A few days later, the Oscar-winning actress, who starred in Dreamgirls and had a supporting role in the Sex and the City movie, is set to perform at the Grammys' MusiCares event in Los Angeles. She's also nominated for four Grammy Awards, which will be given out on February 8. Hudson was last seen on the big screen in The Secret Life of Bees. Last October, her mother, 29-year-old brother, and 7-year-old nephew, were slain in Chicago. Her estranged brother-in-law has been charged in the murders.