The Band - The Night They Drove Old Dixie Down
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The song's lyric refers to conditions in the Southern states in the winter of early 1865 ("We were hungry / Just barely alive"); the Confederacy is starving and on the verge of defeat. Reference is made to the date May 10, 1865, by which time the Confederate capital of Richmond had long since fallen (in April); May 10 marked the capture of Confederate President
Jefferson Davis and the definitive end of the Confederacy."
"Robertson claimed that he had the music to the song in his head but had no idea what it was to be about: "At some point [the concept] blurted out to me. Then I went and I did some research and I wrote the lyrics to the song."
Wikipedia