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    Behind the music of 'La La Land'

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Behind the music of 'La La Land'

Oscar-winning composer Justin Hurwitz gives CNN behind-the-scenes details about how he came up with the songs for 'La La Land.'

Behind the music of 'La La Land'

Oscar-winning composer Justin Hurwitz gives CNN behind-the-scenes details about how he came up with the songs for 'La La Land.'