Lady Gaga is getting in on the inauguration fun this week.  She'll perform at the private Inaugural Ball for President Obama and his staff on Tuesday night at the Walter E. Washington Convention Center in Washington, D.C.

The same venue will host two official balls on Monday night, featuring performers such as Alicia Keys , Katy Perry , Usher , Jennifer Hudson and more.  Beyonce , Kelly Clarkson and James Taylor will take part in the swearing-in ceremony earlier in the day. 

The Washington Convention Center on Saturday night welcomed the Kids Inaugural Ball, featuring Katy, Usher, Far East Movement and some of the stars from Glee . There were also video appearances by The Wanted , Ellen DeGeneres , David Letterman , Jimmy Fallon and Ryan Seacrest .

Nick Cannon emceed the event, which was attended by military members.

Highlights of the Kids Inaugural Ball included the following performances:

* Usher: "Yeah!", "Without You," "OMG"

* Katy Perry: "Teenage Dream," "Part of Me," "Wide Awake," "Firework"

* Far East Movement: "Turn up the Love," "Live My Life"

* Glee 's Darren Criss, Amber Riley and Naya Rivera: "Valerie," "Beautiful," "Not Alone"

* Mindless Behavior: "My Girl," "Mrs. Right"

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