Listen to Lauridsen: O Magnum Mysterium online. Lauridsen: O Magnum Mysterium is an English language song and is sung by Choir Of New College, Oxford and Edward Higginbottom. Lauridsen: O Magnum Mysterium, from the album Chillout: 111 Pieces of Classical Music for Relaxation, was released in the year 2013. The duration of the song is 6:24. Download English songs online from JioSaavn.