Charles Ives, better known as an insurance executive in his time, wrote innovative symphonies incorporating American folk and hymn tunes. Corbis hide caption

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The Nashville Symphony with Music Director Giancarlo Guerrero (center) during Spring For Music at Carnegie Hall in Manhattan, New York on May 12, 2012. Melanie Burford/NPR hide caption

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Composer Henry Brant took 36 years to transform the "Concord" sonata by Charles Ives into a full-fledged symphony. SFS Media hide caption

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Tim Munro of eighth blackbird became enamored with Charles Ives' bizzare soundscape. Courtesy of the artist hide caption

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