great chord and melodic choices here. "literally just a person's voice" as an instrument feels weirdly kind of underrated. in a way it can lend a bit of a silly vibe, but when put together with the beautiful composition it goes beyond that and creates a deeper feeling. i do however think maybe the vocals could use a little more processing to have a slightly more alien or at least ambient vibe, but that might not even be what you were going for
(as i'm writing this comment i'm kind of worried the stuff i'm saying makes no sense here lol)