Conor Oberst staged a 14-band benefit concert last summer on a street in his hometown of Omaha, Neb., to raise awareness about immigration laws. Courtesy of the artist hide caption

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Ray Charles' gritty voice takes a trifle of a tune and transforms "Isn't It Wonderful" into an intimate and enticing lover's plea. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist