Beyonce reportedly lip-synched the National Anthem at Barack Obama's inauguration on Monday (January 21st).
Kristin DuBois, a rep from The United States Marine Band tells Page Six that the superstar decided to use a "pre-recorded vocal track" at the last minute. No official statement from Beyonce's camp has been released.
Various outlets are using Beyonce's Tumblr photos as "proof" that she pre-recorded the performance. See the photos here: http://iam.beyonce.com/