Courtesy of Eddie Wolfl/Smokey RobinsonAfter the serious business of inauguration is over today, President Obama and thousands of special guests will be able to let loose and party at not one but two Inaugural Balls, one of which is so big that it'll be spread over five different exhibit halls of the Washington Convention Center.  Both of the balls will feature some of music's biggest names, including Stevie Wonder and Smokey Robinson, who will appear on different stages at one of the two events. Other stars who'll be entertaining the crowd include Alicia Keys, Jennifer Hudson, Jamie Foxx, Katy Perry, Brad Paisley, Usher, Soundgarden singer Chris Cornell, who will perfrom both solo and with his band.

Here's a look at who's playing where tonight in Washington, D.C.:

Commander-in-Chief’s Ball
Alicia Keys
Chris Cornell
Brad Paisley
Jamie Foxx
Jennifer Hudson
Marc Anthony

The Inaugural Ball (Halls A, B & C)
Alicia Keys
Brad Paisley
fun.
Glee cast
John Legend
Maná
Soundgarden
Stevie Wonder

The Inaugural Ball (Halls D & E)
Alicia Keys
Black Violin
Far East Movement
Glee cast
Katy Perry
Smokey Robinson
Usher

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