SATB a cappella. Adapted from Tallis, in Mode iii (The Third Tune from Archbishop Parker's Psalter): homophonic with poignant melancholy harmonies.
O gracious Light, pure brightness of the everliving Father in Heaven, O Jesus Christ, holy and blessed. Now as we come to the setting of the sun, and our eyes behold the vesper light, we sing thy praises O God, Father, Son, and Holy Spirit. Thou art worthy at all times to be praised by happy voices, O Son of God, O giver of life, and to be gloriied through all the worlds.