I know I rip on Wilco a lot, but this is pretty damn good. Mavis Staples leads Nick Lowe and Wilco in their rendition of The Band's classic "The Weight" backstage at the Civic Opera House in Chicago in December 2011.
Also watch the killer original from the best concert film of all time, 1973's The Last Waltz. A young Mavis Staples wails out the second verse. I love the comment on the youtube page that says, "Rick Danko looks like a little bit like what I imagine 'Crazy Chester' looks like, especially when singing his part." Danko rocks the bad-ass fretless bass.