Aguilera to perform at Jackson tribute concert

Christina Aguilera sings the national anthem before the NFL football Super Bowl XLV game between the Green Bay Packers and the Pittsburgh Steelers Sunday, Feb. 6, 2011, in Arlington, Texas. (AP Photo/David J. Phillip)

August 11, 2011 1:49:00 PM PDT
Christina Aguilera is lending her voice to a Michael Jackson tribute concert planned for October in Wales.