The Obamas attended two official in

The Obamas attended two official inauguration balls, including one held at the Walter E. Washington Convention Center. There the first couple danced to the Al Green classic "Let's Stay Together," sung by Jennifer Hudson. Alicia Keys and Jamie Foxx also performed.
After the inauguration, Obama led the nation through many challenges—none more difficult, perhaps, than the terrorist bombings of the Boston Marathon on April 15, 2013, which killed three people and left more than 200 injured. At a memorial service in Boston three days after the bombings, he told the wounded, "Your country is with you. We will all be with you as you learn to stand and walk and, yes, run again. Of that I have no doubt. You will run again." And he applauded the city’s response to the tragedy. "You’ve shown us, Boston, that in the face of evil, Americans will lift up what’s good. In the face of cruelty, we will choose compassion."