It will be stuffed with musicians from pop (Katharine McPhee), country (Trace Adkins), classical (Lang Lang, Robert McDuffie and opera singer Denyce Graves) and Broadway (Brian Stokes Mitchell, Wilkinson). It will also have readings from … So does McPhee, 25, the former “American Idol” runner-up. “She’s been working with (pop producer) David Foster,” Colbert said. “She’s very beautiful, with a lovely voice.” Still, the “National Memorial Day” concert isn’t about youth. …

More: continued here