Listen to Gregorian Chant: Benedictus deus online. Gregorian Chant: Benedictus deus is an English language song and is sung by Monks of Ampleforth Abbey. Gregorian Chant: Benedictus deus, from the album Sacred Chants, was released in the year 2017. The duration of the song is 1:37. Download English songs online from JioSaavn.