The crowd at the official Inaugural Ball appeared somewhat dazed, even bored, as they awaited the president and first lady's arrival.
All that changed when the band "Fun" broke out into a song they knew by heart. Camera phones in the air, they joined in:
"Tonight, we are young. So let's set the world on fire..."
In unison they sang, until the last verse, when the lead singer's mic cut out. Then it was just the guests filling the massive convention center with the youthful chorus.
— Josh Lederman — Twitter http://twitter.com/joshledermanAP
Inauguration Watch follows the events of President Barack Obama's second inaugural. Look for short items and photos throughout the day.