Jon Hamm and Zach Galifianakis give impromptu Bonnaroo performance

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Billy Joel, Mumford & Sons Lead 2015 Bonnaroo Lineup


Bonnaroo goers got the ultimate performance of a lifetime. And no, it wasn't from any of the top headliners this year, including Billy Joel and Mumford and Sons. Instead two unlikely actors took the stage for their own musical performance.

Funny men Zach Galifianakis and Jon Hamm stormed the stage late Saturday night before Pretty Light's set to give their own impromptu rendition of "We Are the World".

Earlier in the day, Hamm crashed Belle and Sebastian's set, and also performed with Galifianakis inside Bonnaroo's comedy tent.

Maybe the pair should consider a career change. Check out the hilarious moment below:

zach galifianakis and Jon Hamm (Don Draper) singing we are the world last night at #SuperJam 😂

A video posted by MIKE TURK (@hiphopmike) on

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