Mumford and Sons recorded a satisfactory run-through of their 'I Will Wait' single when they visited the 'Late Show With David Letterman' back in September, but the performance was bumped from that night's broadcast to give to more time to none other than British Prime Minister David Cameron, who was a guest on the show. Mumford's song finally aired last night (Nov. 13), and you can watch it above.

The rest of this week looks pretty indie-centric on 'Letterman,' with the Dirty Projectors scheduled to perform tonight, Zooey Deschanel lined up to appear on Thursday's show and the Divine Fits set for Friday. Check out this week's entire schedule here.