Did Beyoncé lip synch on Barak's big day?

It seems Beyoncé  may have mimed her rendition of the Star-Spangled Banner at President Barack Obama's inauguration - the story leaked after a spokeswoman for the Marine Corps Band told The Times in a "last minute" decision, Beyoncé had opted to perform to a pre-recorded backing track and confirmed that the band itself was not playing live. Thousands in a live audience were joined by millions of people who tuned in to watch the president be sworn in for his second term in office. The ceremony was punctuated by performances from James Taylor and Kelly Clarkson, as well as Beyoncé  who sang the national anthem. You can make your own mind up here http://www.beyonceonline.com/uk