César Franck composed this song in 1872. It first was a duet for tenors and basses accompanied on the organ. He arranged it for two equal voices in 1876 for the choir school of Saint-Clotilde Church in Paris. He was a tenured organist for many years. The structure is divided into three parts. The first one is slow and majestic with an alternation on “Veni Creator Spiritus,” the middle part is livelier, and the last part reminds the alternation of the first one. It can be performed by experienced youth choirs or female choirs who want to sing this rich repertoire of the 19th century.