It actually happened!

Tuesday night there was an event at the White House in which President Obama invited some of his favorite singers to come perform.  Justin Timberlake got the chance perform one of the President's favorite songs for him.  Barack felt moved by the performance, too.  You can even catch him singing along at parts!  Here is video of Justin Timberlake singing Otis Redding's "(Sittin' on) The Dock of the Bay" to President Obama!