In the words of Gloriana's Tom Gossin, the group "rocked out with their Barack out" during The Motown Sound: In Performance At The White House. In front of President Obama and First Lady Michelle, the group covered "Ain't No Mountain High Enough," a 1966 Motown hit for Marvin Gaye and Tammi Terrell. Sheryl Crow, Natasha Bedingfield, Smokey Robinson and host Jamie Foxx are also among the celebrities on the special airing tonight on PBS-TV.