The new Coen brothers film Inside Llewyn Davis is set in Greenwich Village’s 1960s folk-rock scene, a scenario that just begs for a star-studded musical bash. And wouldn’t you know it, last night a coterie of prominent folk-rockers including Conor Oberst, Colin Meloy, the Avett Brothers, Marcus Mumford, Patti Smith, Joan Baez, Jack White, and more converged upon Manhattan’s Town Hall for just such a concert to be filmed for an upcoming Showtime special. Inside Llewyn Davis co-star Justin Timberlake was not on hand, so his “understudy” Elvis Costello stepped in to perform Timberlake’s song from the film, “Please, Mr. Kennedy,” alongside actors Oscar Isaac and Adam Driver, cinematic roots music guru T-Bone Burnett, and bluegrass/classical virtuosos Punch Brothers. It’s a hoot, and you can watch a fan-made video below.

The Inside Llewyn Davis tribute concert airs 12/13 on Showtime, and the film hits theaters 12/20.