Watch ‘The Force Awakens’ Cast Sing The ‘Star Wars’ Theme A Cappella

In case you've been in a coma, it's Star Wars week, and no one does that better than Jimmy Fallon. Want proof? The entire principal cast of the The Force Awakens (you may have heard of it) showed up on the Tonight Show last night for a stirring a cappella version of the iconic Star Wars themes with some help from Fallon and The Roots. Lupita Nyong'o, Gwendoline Christie, Daisy Ridley, John Boyega, Adam Driver, Carrie Fisher, Harrison Ford, and Oscar Isaac all show up, because if any movie needs promoting, it's this one.