This sheet music is based on a text used with plainsong. The melody of the version composed by Jacques Guyader is probably based on a Cistercian tradition. He said that one day, he had been particularly moved by a sheet music included in a plainsong booklet and that he decided to draw his work for mixed choirs from it. It is a difficult sheet music but very interesting and enjoyable to work up. Jacques Guyader was born in 1943 in Le Havre. He studied science at the university, and he says he learned music by himself. He began choral practicing when he was 45 as a baritone in the choir Chanlumière in Vichy. He studied harmony and composition in Tours. He mostly composed sacred and secular choral songs, including a Requiem for choirs, soloists and organs and a Christmas cantata for choirs, soloists, organs, harps and drums.