Video: Bon Iver perform with The Roots on Fallon

While in NYC this past week performing on SNL, Bon Iver also stopped by Late Night with Jimmy Fallon for an extended, improvised jam sesh with The Roots. Below you can watch the two groups tag team an 8-minute version of "Perth" off Bon Iver's self titled LP that dropped last year. For reasons unknown, the performance never actually made it to air, but then again I guess that's what the internet is for, right? Enjoy.