Carly Rae Jepsen and the cover of Kanye West's latest album, Cruel Summer. Vanessa Heins/Courtesy of Universal Music Group hide caption

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The Fat Boys in 1990. Left to right: Damon "Kool Rock-Ski" Wimbley, Darren "Buff Love" Robinson and Mark "Prince Markie Dee" Morales. Ebet Roberts/Redferns hide caption

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Electronic soul artist Jeff Phelps with his synthesizers. Courtesy of the artist hide caption

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Eccentric Soul: A Red Black Green Production (the cover detail of the album is above) revisits the influence of producer Robert Williams on the 1970s soul scene in Washington, D.C. Courtesy of the artist hide caption

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Profile Records never meant to get into the rap game, but the label launched the careers of rap groups like Run-D.M.C. Frank Micelotta/Getty Images hide caption

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Kanye West and Jay-Z's highly anticipated collaboration made its debut Monday on iTunes. Daniel Boczarski/Getty Images hide caption

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Soul group The Nu Page was one of the few artists who released music on MoWest in its brief history. Courtesy of the artist hide caption

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The new Aretha Franklin compilation Take a Look features the legendary singer's music from her years with Columbia Records. Frank Driggs Collection/Getty Images hide caption

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Chicago salsa band La Solucion performs in the '70s. Courtesy of The Numero Group hide caption

itoggle caption Courtesy of The Numero Group