Last night, the White House turned into a legendary blues club, and the leader of the free world could not help but join in a little singing of an anthem about his home town.

This event is now over. Grammy Museum’s Executive Director Robert Santelli and First Lady Michelle Obama are currently leading a lesson on the development of the blues, it’s history, and how the influential art form known as the Blues has been the basis of nearly every popular development of American music, from Rock n’ Roll to

Though the song has been featured in dozens of movies, it’s lyrics continue to be somewhat of a mystery. The song, like so many traditional folk songs, has a long and storied history, winding from rushed phonetic translation in New Orleans to a misheard title in Chess Records and far beyond and before.