The president issued a statement today saying, "The blues has lost its king, and America has lost a legend."
Obama says King rose from a farmer's son to become "the ambassador who brought his all-American music to his country and the world."
Obama says King gets stuck in your head and gets you doing things you probably shouldn't. He recalled how he was unexpectedly drawn into singing a few lines of "Sweet Home Chicago" with King when he performed at a White House blues concert three years ago.