Watch Avett Brothers w/Brandi Carlile on Letterman

Avetts

By Blurt Staff

The closing ceremonies of The Late Show With David Letterman continue apace, and last night’s appearance of the Avett Brothers was pretty special – not only did they do “Keep On the Sunny Side” with Brandi Carlile, some guy named Obama was also in the house as one of Letterman’s featured guests… Watch a clip of the Avetts and Carlile, below.

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