Beyonce Sings 'At Last', Barack & Michelle Dance (VIDEO)

serenaded the new president and first lady at the Neighborhood Ball, one of ten events that were attended byand

Performing a song made famous by blues singer Etta James, talented singer Beyonce crooned At Last.

Prior to hitting the dance floor, the president told the crowd that this ball captured the spirit of his campaign that relied heavily on an army of volunteers.

Talented designers Isabel Toledo and Jason Wu were responsible for the inauguration day dresses worn by Michelle Obama.

Check out Beyonce singing At Last while the Obamas dance below.