Beyonce belts out live anthem to explain lip-syncing episode
Beyonce Knowles said she mimed during her performance at Barack Obama's Inauguration Day because she is "a perfectionist."
At a NFL Super Bowl event in New Orleans the singer explained that she hadn't had a chance to rehearse with the orchestra and wanted to make the president proud.
Beyonce started the press conference with a live performance of her national anthem before asking the assembled journalists: "Any questions?"
Watch: Beyonce lip-syncs national anthem
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