Fans of the NBC's The Office will remember actor Ed Helms musical talents from his portrayal of the acapella-loving Andy Bernard.

Fans of the Avett Brothers and The Office will find this video of Helms and the band practicing "Be Kind To A Man When He's Down" at Bonnaroo a few weeks ago.

Helms joined the band on stage to perform the song during their set too.

The Avett Brothers are performing at the Sacramento Memorial Auditorium September 12, no word yet if Helms will join them.