The Zac Brown Band aren't exactly new to classic rock cover songs, but this may be their most heartfelt yet – and certainly one of the biggest crowd pleasers. The country rockers have taken to performing the Beatles' "Let It Be" and, as you can see in the video above, the performance has quickly become a campfire-style singalong.

Not that they don't have their own tunes to sing. In fact, the Zac Brown Band is touring in support of their No. 1 country album, Jekyll and Hyde. They've had a slew of hits of their own too, including "Chicken Fried," "Colder Weather" and "Homegrown." But the group, like many in country music these days, owes a clear debt to the rock music of a different age – and they tip their cowboy hats on a regular basis to those early inspirations.

The Zac Brown Band have been known to cover expected Southern rock and country outlaw tunes like the Marshall Tucker Band's "Can't You See" and Charlie Daniels Band's "Devil Went Down to Georgia," but also offbeat choices like Queen's "Bohemian Rhapsody," Metallica's "Enter Sandman" and Led Zeppelin's "Kashmir," among others.

"We're going to still do things that are somewhat familiar that people like," Brown told Rolling Stone Country, "but we're also going to stretch out and take chances beyond what we've done before. Some people are going to be really surprised."

Rock fans will remember that Brown also recorded an update of "Black Water" last year, as part of the Doobie Brothers' guest-packed Southbound album.

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