The Holly and the Ivy

The holly and the ivy
When they are full-grown
Of all the trees that are in the wood, the holly bears the crown...

Sadly, The Holly and The Ivy, a beautiful, ancient, traditional carol isn't heard or sung much- I first caught it in-2003? When it was Jo Brand's buzzer in a Christmas episode of QI.

Here it is, in beautiful glory, sung by the Mediaeval Baebes.