William Byrd: Ave verum corpus (1605)

Ave verum corpus, natum de Maria Virgine, vere passum, immolatum in cruce pro homine, cuius latus perforatum fluxit aqua et sanguine: esto nobis praegustatum in mortis examine.O dulcis, O  pie, O Jesu, fili Mariae. Miserere mei. Amen.

Hail true body, you who hung on the cross for the sake of humanity, from whose side flowed both water and blood. Be our food both now and at our death. O sweet, O holy Jesus, son of Mary, have mercy on us. (Innocent VI)

Performance by:
Tallis Scholars [YouTube]