Watch Keller Williams’ Grateful Grass & The Infamous Stringdusters Perform “Bertha” At Summer Camp

The 2015 installment of Summer Camp Music Festival saw Keller Williams’ Grateful Grass deliver a memorable performance on 5/22/15. During the energetic, Grateful Dead inspired set, The Infamous Stringdusters lent their bluegrass talents to the stage for an especially soulful rendition of “Bertha.”

The festival has shared pro-shot video from this performance, which you can view below:

Keller Williams will return to Summer Camp Music Festival this summer with his Keller Williams KWahtro project. This year’s lineup also includes: Trey Anastasio Band, Primus, Run The Jewels, Mike Gordon, The Claypool Lennon Delirium, Destructo, EOTO, The Floozies, The Disco Biscuits, Gov’t Mule, Yonder Mountain String Band, Everyone Orchestra, Pretty Lights Live Band, Gramatik, Railroad Earth, Turkuaz, GTA, Spafford, HeRobust, Andy Frasco, Mungion, Naughty Professor, Aqueous, BIG Something, Hip Abduction, Jaw Gems, Organ Freeman, and so many more. For more information, head to the festival’s website.