Back in September, T Bone Burnett called upon many notable past and current collaborators for a one-night-only celebration of the producer’s latest film soundtrack, Inside Llewyn Davis. Patti Smith, Conor Oberst, Gillian Welch, Elvis Costello, and more answered the call along with two stars from the Coen brothers’ Dave Van Ronk-inspired period piece, Carey Mulligan and Oscar Isaac. Both actors have proven their singing chops in previous efforts (Mulligan in Shame and Isaac duetting with her husband), making the event’s main highlight an impromptu, collaborative throwback to the famed Greenwich Village coffeehouse scene of the early ’60s. Folk standards ran rampant at this thing, but Jack White took a different turn by reworking his own White Blood Cells tune “We’re Going to Be Friends” (aka the last song he and Meg performed live together) with lovely harmonies, banjo, fiddle, and upright bass. Watch his scene from the new concert film, Another Day, Another Time, above.