Kyrie: Orbis Factor, medieval chant of the Gradual of Eleanor of Brittany [ca. 1250 A.D]

1. Orbis factor rex aeterne, eleison

kyrie eleison
2. Pietatis fons immense, eleison

kyrie eleison
3. Noxas omnes nostras pelle, eleison

kyrie eleison

4. Christe qui lux es mundi dator vitae, eleison

christe eleison
5. Arte laesos daemonis intuere, eleison

kyrie eleison
6. Conservans te credentes confirmansque, eleison

kyrie eleison
7. Patrem tuum teque flamen utrorumque, eleison

kyrie eleison

8. Deum scimus unum atque trinum esse, eleison

kyrie eleison
9. Clemens nobis adsis paraclite ut vivamus in te, eleison.

kyrie eleison

Translation:

1. Maker of the world, King eternal, have mercy upon us.
2. O immense source of pity, have mercy upon us.
3. Drive off all our evils, have mercy upon us.
4. Christ who art the light of the world and giver of life, have mercy upon us.
5. Consider the wounds produced by the devil's art, have mercy upon us.
6. Keeping and confirming thy believers, have mercy upon us.
7. Thou and thy Father, an equal light, have mercy upon us.
8. We know that God is one and three, have mercy upon us.

9. Thou, merciful unto us, art present with the Holy Spirit that we might live in thee, have mercy upon us.