Six months ago, after watching Concord's Avett Brothers just slay a soldout crowd at Booth Amphitheatre, I likened it to seeing "Bruce Springsteen on the Jersey Shore in the early '70s, pre-breakthrough." Possibly hyperbolic, yes. But the Avetts have lately been ensconced in the studio with producer Rick Rubin, making their major-label debut album -- and apparently getting in touch with their inner Bruce. This video can be found on the "Hangin' on E Street" page of Springsteen's Web site.

That Rubin-produced Avett Brothers album, meanwhile, should be out this summer.