Listen to Gregorian Chant: Professional Chant for Candlemass "Lumen" online. Gregorian Chant: Professional Chant for Candlemass "Lumen" is an English language song and is sung by Stephen Cleobury and Westminster Cathedral Choir. Gregorian Chant: Professional Chant for Candlemass "Lumen", from the album Sacred Chants, was released in the year 2017. The duration of the song is 2:29. Download English songs online from JioSaavn.