Article Photos: Ravens edge 49ers 34-31 in electric Super Bowl

Alicia Keys sings the national anthem before the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Patrick Semansky)

Alicia Keys sings the national anthem before the NFL Super Bowl XLVII football game between the San Francisco 49ers and the Baltimore Ravens, Sunday, Feb. 3, 2013, in New Orleans. (AP Photo/Patrick Semansky)