How do you describe an album like Nepenthe? You could focus on the mechanics: the loops, the choir, recording in Iceland with members of Sigur Ros and Mum; you could talk about Barwick’s upbringing, singing mostly a cappella in church; you could make ambient comparisons with Eno et al.
Or, you could just provide instructions: go find a vast open space, or a vast enclosed space, or create that space with headphones. Let the ethereal flow of The Harbinger soak through you, into you. Use its wordlessness to make images of your own. Consider the title itself: nepenthe - a drug in ancient Greece, to remove and forget sorrow.