Consider it an attempt of story telling through a beautiful lyric. Codex is a magnificent song by Radiohead, and it was well served with such a beautiful body.
It's about seeking light, and finding serenity in darkness.
An attempt to manipulate lights and shadows; to tell a story.
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Then Heavenly Father is a song by Bon Iver, this version was an acapella performed live at the Sydney opera house. This exact performance was raw and true.
It's about belief and struggle with sin.