The White House celebrated blues music for another PBS 'In Performance' series last night. Among those performing for the President and First Lady were Mick Jagger, Jeff Beck, B.B. King, Buddy Guy, and President Obama himself! 

The two-hour show concluded with an all-star finale of "Sweet Home Chicago," which, at the urging of Buddy Guy, featured President Obama joining in at the end. Buddy told the president, "I heard you singing Al Green [a couple of weeks ago]. You started something you got to keep it up now." The full concert airs on PBS this Monday, but you watch our President bust out a few lines below …