Killer Mike put in a mighty fine performance last night on Late Show with David Letterman , rockin' his way through "Untitled," one of the many outstanding tracks from one of last year's best albums, R.A.P. Music . He had back-up too, which included his homies Scar and El-P . Watch Mike rip it and then see him spread love the ATL way as he greets Letterman at the conclusion.
(Props to IdolXfactor3)