Bon Iver’s Justin Vernon teased his collaboration with Taylor Swift during an Instagram Live session Tuesday (April 13th).
The Milwaukee Journal Sentinal reports that he also played unreleased music featuring the voices of Fleet Foxes’ Robin Pecknold and Anais Mitchell.
It is unclear if the song with Swift is for Bon Iver or Big Red Machine, Vernon’s project with The National’s Aaron Dessner, who produced Swift;s folklore and evermore albums.