This is so cool. It is an NPR piece that discusses the song, and how the chords, notes, tempo and such combine with the evocative lyrics to creat a powerful comentery on the depression.
give it a listen.
http://www.npr.org/templates/story/story.php?storyId=96654742
give it a listen.
http://www.npr.org/templates/story/story.php?storyId=96654742