Michelle Obama Blues

  From left, Troy "Trombone Shorty" Andrews, Shemekia Copeland, and Keb Mo, perform during a student workshop celebrating Blues music, Tuesday, Feb. 21, 2012, in the State Dining Room of the White House in Washington. (AP Photo/J. Scott Applewhite)
From left, Troy "Trombone Shorty" Andrews, Shemekia Copeland, and Keb Mo, perform during a student workshop celebrating Blues music, Tuesday, Feb. 21, 2012, in the State Dining Room of the White House in Washington. (AP Photo/J. Scott Applewhite)

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