Henry Clay Work (October 1, 1832 – June 8, 1884) was an American composer and songwriter known for the songs Kingdom Coming, Marching Through Georgia, Wreck of the Old 97 and My Grandfather's Clock.Work produced much of his best material during the Civil War. He captured the deeply-felt emotions of that conflict and was more popular even than Stephen Foster. Work shares much of the credit for the development of the carefully refined Verse-Chorus structure of late 19th century popular song.

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