Star Wars Cast Sings Star Wars Theme [VIDEO]

Stereogum recaps:

Daisy Ridley, Oscar Isaac, John Boyega, Adam Driver, Gwendoline Christie, Lupita Nyongo, Carrie Fisher, various droids, and Chewbacca all joined Fallon and the Roots to Pentatonix the shit out of it. They even got grumpy old Harrison Ford to show up for a couple of seconds. And you know what? It’s great! It’s so fun!