Nice
It reminds me of some of the music that accompanies Terry Pratchett's Discworld series, as some of those books were made into TV adaptations. It certainly seems like the sort of music that they used around the Hogfather's icy castle and the Tooth Fairy's castle (materials unknown).
Perhaps the sounds of the choir need to be raised slightly, as it would make it more chilling - sometimes, they seem quite conspicuous by their lower than anticipated tones.
I like the oboe accompanying the rest of the tune, though it could use more variation with the strings - possibly violas as well as violins.
[Review Request Club]