Katy Perry, Usher perform at kids inaugural concert
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Credit: Getty Images
WASHINGTON, DC - JANUARY 19: The musician Usher sings during the children's concert at the Washington Convention Center to celebrate military families on January 19, 2013 in Washington, DC. The U.S. capital is preparing for the second inauguration of U.S. President Barack Obama, which will take place on January 21. (Photo by Joe Raedle/Getty Images)
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