Zach Galifianakis' new Between Two Ferns: The Movie is out today on Netflix, featuring appearances by Will Ferrell, Keanu Reeves, David Letterman, Matthew McConaughey, Brie Larson, Jon Hamm, Benedict Cumberbatch, Peter Dinklage, Chance the Rapper, Paul Rudd, Adam Scott, Rashida Jones, and more. There's also a scene in a bar (around the 44-minute mark) where The National frontman Matt Berninger and Phoebe Bridgers are in the bar band and duetting on a new song they wrote for the movie called "Walking On A String." You can hear a small part of the song in the film, and it will be released as a single on October 17 via Dead Oceans.

The song was written by Matt, his wife/frequent collaborator Carin Besser, and Mike Brewer; recorded with Walter Martin on guitar and Matt Barrick on drums (both of The Walkmen); and produced by Phoebe, Tony Berg and Ethan Gruska.

Watch Between Two Ferns: The Movie on Netflix now.