This arrangement by Charles Callahan was originally set to the text of the Tantum Ergo, a Benediction hymn by St. Thomas Aquinas. Louis Vierne composed this music, his opus 2, in 1886 at the age of sixteen. He scored it for four mixed voices and organ, and also arranged it with orchestral accompaniment. This edition unites this beautiful romantic music with an even earlier Latin text, but in the English translation made in 1884 by Gerard Moultrie. Part of the St. Louis Cathedral Series.