>> i grew up on swb. you can expect all their hits. i think it's going to be a sing-along in that amphitheater. >> reporter: deonno harmon knows how to put on a show, from super bowl half times to this year's emmys. >> juneteeth. >> she's executive-producing tonight's juneteeth concert on cnn. >> celebrate our culture to share our culture, and to continue to push for freedom for not just black americans, but for everybody. >> juneteeth commemorates the day in 1865 when union troops traveled to texas to enforce the end of slavery, two years after the emancipation proclamation. >> black history is american history. vice president kamala harris will appear live on stage just days after the first white house juneteeth concert. >> she and president biden elevated juneteeth to a federal holiday in 2021. so to have her in the building, in the house, sharing this energy, it takes it to another dimension.