Justin Vernon of Bon Iver performs 'Perth' with The Roots

Twitter king Ahmir "?uestlove" Thompson today shared an eight-minute clip of Justin Verson of Bon Iver performing "Perth" from Bon Iver with The Roots during a recent visit to The Late Night with Jimmy Fallon studios in New York. Watch it below. Bon Iver is up for four Grammys on Sunday night, including record and song of the year for "Holocene," and best new artist. 

Previously: David Lee Roth interviews Alex and Eddie Van Halen Follow In The Mix on Twitter here