Ave Regina cælorum - the first stanza of this twelfth-century antiphon is used on the soundtrack in the track "Burning the Past"
Ave, Regína caelórum, ave Domina angelorum, salve, radix, salve, porta, ex qua mundo lux est orta. Gaude, Virgo gloriosa, super omnes speciosa; vale, o valde decora, et pro nobis Christum exora.