epa03549086 US musician Alicia Keys performs at the Commander-in-Chief Ball before the arrival of US President Barack Obama and first lady Michelle Obama in Washington, DC, USA, 21 January 2013. President Obama was sworn-in for his second term as president during a public ceremonial inauguration earlier in the day.  EPA/Justin Sullivan / POOL x *** Local Caption ***  03549086.jpg

In pictures: Obama's inauguration party