Al Green, from the cover of his Greatest Hits album, first released in 1975. Courtesy of the artist hide caption

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'Let's Stay Together'
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Paul Williams, Eddie Kendricks, and David Ruffin of the Temptations, in 1965. Hulton Archive/Getty Images hide caption

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'My Girl'
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Mama Cass Elliot with her Mamas and the Papas bandmates John Phillips and Denny Doherty in 1966. Express/Getty Images hide caption

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The Story Of 'Dream A Little Dream'
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Composer Richard Rodgers in London for the opening of 'The Boys From Syracuse'. Ted West/Getty Images hide caption

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'My Funny Valentine'
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