Not the usual kind of humpday morning post but hey, you got to roll with the punches. Remember not too long ago when Justin Timberlake and Jimmy Fallon hooked up on his late night show and laid down an awesome history of Rap with the help of The Roots as a backing band? don't worry if not as today you can check out version 2.0. Last night the second installment happened live on air and it's a pretty damn funny watch as well as entertaining. Hit play above courtesy of our friends at The Audio Perv and see how many tracks you can name from the monster mashup.