The Terror (2018) has an unoffical soundtrack that can be found on the Cold Boys Fandom Hub, linked below. Two of my favorites are Planchette by Macrus Fjellstrom which is from Episode 6, A Mercy during the iconic Carnival scene and Birth Of Liquid Pleiades by Tangerine Dream which plays during episode 2, Gore, during Graham Gore's scene of leaving the note in the cairn.
The Last Sunset Of The Year is an album by Marcus Fjellstrom which prominently features in the show. I don't believe every song is used but the iconic scoring behind Blanky's dance in the rigging with Tuunbaq is from this album. It's such an incredible piece of work.