Mumford & Sons delivered a whopping 20-song set to Bonnaroo attendees on June 13, and closed out their encore with an all-star rendition of the Beatles' "With a Little Help from My Friends."

As you can see in the fan-shot footage above, the band brought out a long list of "friends" for "Friends," including members of My Morning Jacket, the War on Drugs, Hozier and Dawes, as well as actor Ed Helms and photographer Danny Clinch.

Mumford & Sons have a well-documented history of covering the Beatles, having performed an assortment of Fab Four classics that includes "Come Together" and "Golden Slumbers / Carry That Weight." Their Bonnaroo performance wasn't even the first time they've covered "With a Little Help from My Friends" — they also brought it out at Glastonbury in 2013, with members of Vampire Weekend, the Vaccines and First Aid Kit joining in.

The Mumford set added a bright spot to a festival with more than its share of ups and downs: As Diffuser reports, one attendee collapsed and died due to what's being referred to as "pre-existing cardiac issues." "The safety and security of our patrons are our top priority, and our medical staff responded flawlessly," said Bonnaroo emergency services director Carl Monzo. "Our sympathy goes out to his family and friends."

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