Substrata opens with the spacious eco-industrial thrum of As The Sun Kissed The Horizon (1:47), which becomes the ethereal melancholia of Poa Alpina. In these 11 pieces, a variety of haunting moods and styles (generally of vaporous, cyclical natures) are presented... from the gentle, strummy Times When I Know You'll Be Sad which becomes the electro-bio-mechanical slur of Hyperborea, to Kobresia's muttered Russian voice and symphonic string passages, to the elegantly cinematic swell of Antennaria.