The Advent hymn we all know today as O Come, O Come, Immanuel was arranged in its modern form by Thomas Helmore and published in Hymnal Noted</I> in 1856. Both the words and melody, however, predate this version by centuries. The words are based on a 9th century antiphon and the tune, Veni Immanuel, is taken from a 15th century processional of French Franciscan nuns, part of the setting for the funeral hymn Libera Me. This arrangement aims to expand on the power and myste...