Watch The Avett Brothers Jam With Ed Helms Backstage At Bonnaroo

The Avett Brothers surprised Bonnaroo when they showed up unannounced at the Ed Helms-hosted bluegrass superjam. They joined the musician and actor onstage to play “Be Kind To A Man When He’s Down,” a standard from the 1920s.

The Bonnaroo Interview: The Avett Brothers

Watch them rehearse the song backstage:

And check out their performance later that evening:

As a bonus, here’s Sarah Jarosz and company running through a cover of Gnarls Barkley’s crazy from the same Superjam.

Bonnaroo In Review: The Avett Brothers