I finally bought the soundtrack as the more I watch the film the more I love the score! Schachner beautifully blended orchestral sounds with Native American music in such a evocative manner. Also the soundtrack is literally the only merch that's available to purchase so I bought the mp3 album on iTunes and then (because I have a propensity for physical media) burned it to a CD. Therefore I can at least pretend as though I have some physical merch from this wonderful film
https://ibb.co/fHMCyBM
