Donald Byrd onstage, in an image circulated by his record label at the time, Blue Note Records. Echoes/Redferns/Getty Images hide caption

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Mumford & Sons (from left: Ben Lovett, Marcus Mumford, Ted Dwane and Winston Marshall) accept the award for album of the year at the Grammy Awards on Sunday night. Kevork Djansezian/Getty Images hide caption

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Fiddler Bill Stepp in Kentucky's Magoffin County in the 1930s. Courtesy of Elsie Risner and Becky Arnett hide caption

itoggle caption Courtesy of Elsie Risner and Becky Arnett

Producer and songwriter Jeff Bhasker is nominated for four Grammy Awards this weekend, including producer of the year, non-classical division. Ninelle Efremova/Courtesy of the artist hide caption

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The late American conductor James DePreist. Wendy Leher/courtesy of the artist hide caption

itoggle caption Wendy Leher/courtesy of the artist

Dan Auerbach of The Black Keys performs in England last August. Along with five nominations for his band, Auerbach is nominated for Producer of the Year, Non-Classical division. Simone Joyner/Getty Images hide caption

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J Dilla in the studio of fellow producer Madlib. Roger Erickson/Courtesy of the artist hide caption

itoggle caption Roger Erickson/Courtesy of the artist

Justin Bieber on stage in December. Bieber's 2012 album Believe, despite selling over 1,000,000 copies, wasn't nominated for a single Grammy Award. Michael Kovac/Getty Images hide caption

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Lena Hughes recorded one album of Southern parlor music before her death in 1998. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist