With that in mind, heavy spoilers ahead.
The scene was reportedly written by Druckmann as a "goodbye" to Joel and Ellie, and takes place at Tommy's dam one night after the closing events of the game. Some reports put it at four years later, but the general consensus is broadly "after".
Joel is talking to Ellie in her room at Tommy's, explaining that Tommy is trying to set him up to marry a girl named Esther. According to various accounts of the scene, Ellie is acting distant and reserved, until Joel pulls out a guitar and sings a song (which Joel's voice actor Troy Baker performed live.) Joel tells Ellie a joke, and the pair laugh together, the tension broken. Joel leaves the guitar with Ellie as a gift, and the scene ends with Ellie alone on her bed, strumming a chord.
Does Druckmann's claim that the scene was written to farewell the pair mean we won't see them in a possible sequel? That's anyone's guess, although it's interesting that it evokes the "fan art" for the game created by Last of Us artist Marek Okon in May so strongly.
The Last of Us: One Night Live was performed in Los Angeles to celebrate the launch of The Last of Us: Remastered. Watch a recording of the live show here, and check out our review of the game here.Lucy O'Brien is Entertainment Editor at IGN AU. Follow her ramblings on Twitter.