Justin Vernon, of Bon Iver, just keeps on collaborating with artists you might otherwise think improbable. We've already heard his work with everyone from Kanye West to The Flaming Lips, and now it appears that the falsetto-y singer-songwriter has put something together with Minneapolis spitter Astronautalis.

The two recorded their project with some help from multi-instrumentalist S. Carey, also of Bon Iver, and producer Ryan Olson, who you might know from Gayngs. They apparently recorded all the music and some vocals with Vernon while Astronautalis freestyled for nearly eight hours(!). He told City Pages that they want to get the music soon and will likely announce some shows in the meantime. 

You can check out Astro's description of the project below:

"A lot of my fans are like, 'Oh this is going to be amazing: Astronautalis rapping and Justin singing choruses.' It's not going to be that," [Astro] stresses. "I'm sure that all of Justin's fans are going to be like 'Oh, it's a new Bon Iver record and there's these other guys.' Everyone's fans respectively are going to expect certain things."

[via Pitchfork]