William Byrd's 1589 Ne Irascaris Domine (do not be angry, Lord), filmed in the Lady Chapel, Ely Cathedral.
During my four years spent in Ely, I attended services in the Lady Chapel every morning. A truly stunning location; perfect for the cathedral's combined male/female choirs. You will note that the boy choristers are much younger than the girls; the boys are members of The Choir School, whereas the girls are all members of the upper school.
N.B. Cromwell's hooligans knocked all the heads off the lower surrounding stone carved 'niches', however I do know of one that still exists; it's well hidden, but I could show it to you if you meet me there. Cromwell lived in Ely from about 1635 onwards; I'm surprised no-one knocked HIS head off.
The true beauty of The Lady Chapel is probably best appreciated if you watch this on YouTube; and do make sure that your laptop is linked to a really good sound system.