Before (left to right) Justin Vernon, Joe Westerlund, Phil Cook and Brad Cook started Bon Iver and Megafaun, they made music together as DeYarmond Edison. D.L. Anderson/Courtesy of the artist hide caption toggle caption D.L. Anderson/Courtesy of the artist Review Music Reviews Bon Iver wasn't born in a vacuum — it took an 'Epoch' to form August 29, 2023 DeYarmond Edison's Epoch revels in the early alchemic triumphs of Bon Iver and Megafaun members. But the box set also reminds us that no moment of creative inspiration takes place spontaneously.