Beyonce Sings "At Last" at Neighborhood Ball

Beyonce sang the first dance for President Obama and his wife Michelle Obama at the Neighborhood Ball last night. That must have been the most proudest moment of her career.

She was so emotional that her voice almost cracked a few times, but that's not a bad thing because we all knew she was singing from the heart.

We loved her performance and felt like it was very appropriate. What did you think of her performance?