The music that makes one of us emotional doesn't always make sense to others. William Lovelace/Getty Images hide caption

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Sam Cooke in 1964, performing on the ABC variety show Shindig! just a few months before his death that December. ABC Photo Archives/Getty Images hide caption

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Clockwise from top: The Beatles, James Blake, Colin Meloy, Marisa Anderson Courtesy of the artists hide caption

itoggle caption Courtesy of the artists

Martin Luther King Jr. waves from the Lincoln Memorial on the Mall in Washington, D.C. during the March on Washington. AFP hide caption

itoggle caption AFP
Courtesy of the artist