President Obama's Big Day

What a mood of celebration here in the nation's capital. So many, hundreds of thousands of people, turning out this weekend, to celebrate this inaugura. All a part of the lead-up to today's big public... See More

What a mood of celebration here in the nation's capital. So many, hundreds of thousands of people, turning out this weekend, to celebrate this inaugura. All a part of the lead-up to today's big public swearing-in. And of course, the parade to follow. Overnight, the president attended the first event of his second term. A candlelight reception. What we're doing is celebrating each other and celebrating this incredible nation that we call home. Reporter: Where he addressed the issue everyone in washington has been discussing. I love michelle obama. To address the most significant event of this weekend, I love her bangs. Reporter: Hours earlier, at the white house, his second term officially began, as the president took the oath of office, in a private white house ceremony. So, help me, god. Reporter: As michelle and daughter, malia, beamed, 11-year-old daughter, sasha, encouraged her dad. Good job, dad. Rep ALL WEEKEND, Workers have been preparing the capitol, the national mall, and the parade routes for the influx of spectators that descended upon washington to watch president obama be sworn in a second time. The theme of this year's inauguration is, our people, our future. Reporter: While the president plans to look at the future, he'll pay tribute to the past. He'll be sworn in on two bibles. One used by abraham lincoln. And one, fittingly on this day, used by dr. Martin luther king jr. The president will celebrate at two inaugural balls, versus the ten held four years ago. Even if there's less fanfare, the day will not be without its pomp and circumstance. And star power. Katy perry kicked things off at a concert earlier this weekend. ♪ At last ♪ Reporter: And beyonce, whose rendition of edda james' "at last" was a highlight of the 2009 inauguration, will this time perform the national anthem, at the capitol ceremony. Who can forget that moment in 2009. Again, sasha pointed out, dad did not mess it up. He has one more shot at it. That's right, josh.