"Dark Was the Night" generally refers to a 1792 hymn by Thomas Haweis, which influenced Blind Willie Johnson’s iconic 1927 wordless, hummed gospel-blues recording, which was later included on the Voyager Golden Record. You can find the full lyrics at: Hymnary.org (Original Hymn) Genius.com (Gov't Mule version) Hymnary.org ("O Dark Was the Night" Christmas Hymn)