Video: Beyonce Knowles Serenading Barack and Michelle Obama

January 20, 2009 would be an unforgettable night not only for President Barack Obama and First Lady Michelle Obama but also for Beyonce Knowles. The singer serenaded the couple with her recent remake of Etta James' "At Last" as they took their first dance at the Neighborhood Ball.

Wearing a lavender satin gown, Beyonce sang the song as Barack and Michelle shared a few laughs and quiet conversation during the dance. During her performance, she looked very happy and confident singing the song.

By the time the song was over, Beyonce was seen in tears. Two days before, on January 18, the singer also performed for Obama, delivering the finale, "America the Beautiful", at "We Are One: The Obama Inaugural Celebration at the Lincoln Memorial" in Washington D.C..

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