Singer Stevie Wonder performs during the Public Inaugural Ball at the Walter E. Washington Convention Center on January 21, 2013 in Washington, DC. U.S. President Barack Obama was sworn in for his second term earlier in the day. (Photo by Mario Tama/Getty Images)
Singer Stevie Wonder performs during the Public Inaugural Ball at the Walter E. Washington Convention Center on January 21, 2013 in Washington, DC. U.S. President Barack Obama was sworn in for his second term earlier in the day. (Photo by Mario Tama/Getty Images)