Robert Schumann's music evokes the image of a child's dreams. iStock hide caption

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Mourners at a funeral Getty Images hide caption

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Mazurka Journal des Demoiselles/Wikimedia Commons hide caption

itoggle caption Journal des Demoiselles/Wikimedia Commons

Fred Astaire and Ginger Rogers Hulton Archive/Getty Images hide caption

itoggle caption Hulton Archive/Getty Images

Czech composer Leos Janacek sent a non-stop stream of more than 700 love letters to a much younger, married woman; she inspired many of his best works. iStock hide caption

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Aaron Copland captured the sound of America's wide open spaces with surprisingly simple techniques. iStock hide caption

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Composer Steve Reich's Music for Mallet Instruments, Voices and Organ has a percussive motor that never stops. Courtesy of the artist hide caption

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An attention-grabbing opening can be the key to a successful composition. Wikimedia Commons hide caption

itoggle caption Wikimedia Commons