Missy Elliott (left) joins Katy Perry during the 2015 Super Bowl Halftime Show. Christopher Polk/Getty Images Sport hide caption

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Pearl Jam (top left), Missy Elliott (top right), the cover of Nirvana's Nevermind (bottom right), PJ Harvey (bottom left), Jeff Mangum of Neutral Milk Hotel (center). Courtesy of the artists hide caption

itoggle caption Courtesy of the artists
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