The Public School 22 Chorus is singing in front of the US Capitol in advance of President Obama's arrival.
The chorus of 65 schoolchildren was formed in 2000 and is one of the most renowned school choirs in the world.
Beyonce "lip-synched" the national anthem at President Obama's inauguration because she did not have time to rehearse with the band.
A day of grand political theatre lies ahead, but President Obama knows his history and will be steeling himself for a turbulent second term.
Presidential inaugurations are normally highly scripted events, but things don't always go according to plan.