Superstar Beyonce sang The National Anthem at President Barack Obama's 2013 Inauguration earlier this week on the steps of the Capitol Building in Washington DC. The performance has become controversial however after it was revealed that Knowles was lip-syncing the whole thing to a backing track with her voice. In the video below, Broadway vocal coach Liz Caplan chimes in on the issse. Check it out below
SOURCE: BroadwayWorld at 10:51AM on January 23, 2013