I adore WB Yeats, so this was never going to let me down.
I also absolutely love the piano work and the chord choice. Very menacing and incredibly well played. Truly an incredible standard of performance, recording and songwriting. This, honestly, may be one of my favourite things I've ever seen shared here.
As an addendum, the polyrythmic drums are a wonderful touch. The overall mood I find this evoked is somewhat similar to the theme song to 28 Days Later.
Menacing and brooding but dripping with style, substance and dynamic.
Can't fault this at all, well well done.