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Beyonce, Jay-Z, Katy Perry, John Mayer and other stars at 2013 Presidential Inauguration

<div class="meta "><span class="caption-text ">Beyonce performs the national anthem after President Barack Obama&#39;s ceremonial swearing-in ceremony during the 57th Presidential Inauguration. (ABC News)</span></div>
January 21, 2013 12:00:00 AM PST