Plus, Robert Plant, Kings of Leon, The Pretenders, Seu Jorge, and many more.
Laurie Anderson, Emily Haines, Mark Kozelek, and Nels Cline were also part of the festivities.
Listen to covers of The Milk Carton Kids and Gillian Welch.
Kenneth Pattengale and Joey Ryan sound worn down by their continued time on the road.
The star-studded benefit concert for the Coen Brothers film gets a physical release.