I'm Morley Safer. If there's one passion in this country it is music -- the universal language. If there's one man who inspires passion, it is Stephen Colbert -- a sunburst of emotion in a time darkened by reason. In November 2006 these forces collided, sending shockwaves through the American public and dividing a nation. It began as a Green Screen Challenge, it evolved into something far more significant -- a guitar solo challenge, a battle of titans. Tonight, America's last hero, Stephen Colbert, faces off against rising indie music outfit The Decemberists. Who will rock the nation and who will kneel before the Rasputin of Riffs? Two men, two axes, two chances to show the world who is the Socrates of Shred. That story and Andy Rooney coming up.