Carrie Underwood will sing with Tony Bennett at a fundraising concert at the Staples Center in Los Angeles on Sept. 24. Diana Krall, John Mayer and Stevie Wonder will also perform. Presented by AARP, the concert will raise money for Drive to End Hunger, with a focus on older Americans. Bennett, who turned 85 on Aug. 3, will release Tony Bennett: Duets II on Sept. 20. He sings "It Had to Be You" with Underwood on the album. They will also appear as themselves to perform the song on an episode of the CBS series Blue Bloods on Sept. 23.