Christina Aguilera's Lullaby

Pictures do paint a thousand words, but for Christina Aguilera's ad, it also needs a power vocal for the lullaby to complete the theme.

Pop diva Christina Aguilera recently shot a PSA for Rock the Vote, where she sings a lullaby of "America the Beautiful" to her son Max who was wrapped in the American flag.

"She sang a cappella, and her son was so well behaved. She got it on the first take,” says the Rock the Vote executive director Heather Smith.

Christina and her star-spangled baby's ad is expected to debut in few weeks. It serves as symbol of new generation's artists speaking out to young people.

"This image really shows the country's 44 million young Americans that the future is in our hands," the editor concluded on Christina Aguilera's lullaby ad.