Song of the Week

It's exam time again! My first exam isn't until Friday, but then I have an evil cluster of them, so that will be fun.
This week it is the return of my favourite creepy carol, in a slightly different form. Castleton Carol, by Kerfuffle. It's a renaissance carol, also known as Down in Yon Forest. Variants have been collected a few times, most notably by Vaughan Williams, as the title suggests in Castleton, Derbyshire.