Jennifer Hudson performs at the Command in Chief's Ball in Washington, DC, on Jan. 21. The first couple shared a dance as she sang "Let's Stay Together."
Stevie Wonder performs at the Inaugural Ball in Washington, DC., Jan. 21.
Alicia Keys performs during the Inaugural Ball at the Walter E. Washington Convention Center on Monday, Jan. 21, in Washington, DC.
Brad Paisley sings during the during the Commander-In-Chief's Inaugural on Monday, Jan. 21.
Beyoncé performs the national anthem as U.S. President Barack Obama looks on during the presidential inauguration on the West Front of the U.S. Capitol Jan. 21 in Washington, DC.
James Taylor performs during the swearing-in ceremonies for U.S. President Barack Obama
Kelly Clarkson sings "My Country 'Tis of Thee."
John Mayer and Katy Perry attend the presidential inauguration on the West Front of the U.S. Capitol on Jan. 21 in Washington, DC.
Jay-Z and Beyonce arrive for the presidential inauguration.
Kelly Clarkson, right, and fiance Brandon Blackstock arrive on the West Front of the Capitol in Washington for the Presidential Barack Obama's ceremonial swearing-in ceremony.
Actor Steve Harvey waits for the start of the presidential inauguration.
Jamie Foxx attends Jamie Foxx And Kenny Burns 2013 Inaugural Party on Jan. 20 in Washington, D.C.
Wayne Brady and Doug E. Fresh perform on stage at The Hip Hop Inaugural Ball II at Harman Center for the Arts on Jan. 20 in Washington, DC.
Mario Lopez spoke at the Latino Inaugural 2013 at The Kennedy Center Sunday, Jan. 20, in Washington, DC. The event celebrated the Latino vote.
Kate Walsh attends Planned Parenthood & Rock the Vote 2013 Inauguration Party on Jan. 20 in Washington, DC.
Will.i.am performs during the 2013 Green Inaugural Ball at Newseum on Jan. 20 in Washington, DC.
Mark McGrath of Sugar Ray performs with Camp Freddy at the 2013 Green Inaugural Ball at Newseum on Jan. 20 in Washington, DC.
Wilmer Valderrama and Rosario Dawson attend the Voto Latino's 2013 Inauguration Celebration at Oya Restaurant on Jan. 20 in Washington, DC.
Presidential Inaugural Committee Co-Chair Eva Longoria participates in the opening ceremony for the National Day of Service as part of the 57th Presidential Inaugural festivities on Jan. 19.
Usher kicked off his set at the Kids' Inaugural Concert in Washington, DC, Saturday with "Yeah!" He also performed "OMG" and "Without You" during the Jan. 19 performance.
"America's Got Talent" host Nick Cannon emceed the Kids' Inaugural Concert in Washington, DC, on Jan. 19.
Naya Rivera, left, and Darren Criss of "Glee" perform at the Kids' Inaugural Concert.
Actor, "Dancing With the Stars" season 13 champ and former U.S. Army Infantryman J.R. Martinez spoke at the Kids' Inaugural Concert.
John Legend attends the Hip-Hop Inaugural Ball on Jan. 20.
Katy Perry performs some of her biggest hits at the Kids' Inaugural Concert, including, "Firework," "Teenage Dream" and "Part of Me."
T-Pain performs at the Inaugural Youth Ball on Jan. 19.