The Three Ravens on Celtic Folk Harp

An old English folk song. Similar in content to the Scottish, Twa Corbies. The lyrics one this one are slightly less depressing. The repeated "down derry derry derry down" is just some nice sounding gibberish.
Sheet music for 40 Medieval and Renaissance songs (including this one) can be purchased here: a.co/d/1SmrK7E
Lyrics:
There were three ravens sat on a tree,
Down a down, hey down, hey down,
There were three ravens sat on a tree,
With a downe,
There were three ravens sat on a tree,
They were as black as they might be.
With a down, derry, derry, derry, down, down.
The one of them said to his mate,
Where shall we our breakfast take?
Down in yonder green field,
With a downe,
There lies a Knight slain under his shield,
His hounds they lie down at his feet,
So well they can their Master keep,
With a down, derry, derry, derry, down, down.
His Hawkes they fly so eagerly,
Down a down, hey down, hey down,
There's no fowl dare him come nigh
With a downe,
Down there comes a fallow Doe,
As great with young as she might go,
With a down, derry, derry, derry, down, down.
She lift up his bloody head,
Down a down, hey down, hey down,
And kissed his wounds that were so red,
She got him up upon her back,
With a downe,
And carried him to earthen lake,
With a down, derry, derry, derry, down, down.
She buried him before the prime,
She was dead her self ere even-song time.
Down a down, hey down, hey down,
God send every gentleman,
With a downe,
Such hawkes, such hounds, and such a Leman.
With a down, derry, derry, derry, down, down.