I'm curious to whether this is for double string orchestra, or two quintets, simply because you chose the solo instruments for playback. I would be a little worried about how some sections would carry with dynamic difference between homophonic horns versus polyphonic strings.
Part1: Really cool, the way the tremolos in the strings bother had separate and unison dynamic ideas was really cool. The texture of this movement is really cool. The more sparse melodic fragments were quite interesting. I myself am quite partial sustained melodic ideas, but you conveyed this sparser melody very well in this movement.
Part 2: A good atmosphere. You are very skilled at connecting very different textures to unifying to a single environment. Atmospheric music is generally not my taste because it doesn't command me to feel an emotion like most, Baroque - Romantic period do. However, I think your music doesn't fail the way most music in this style does. It has emotional bounds that I feel.
Part 3: Generally the same ideas as part 1. I really appreciate how even without a strong melody, you are able to very clearly connect the different sections. Also at 17:05, I can't stop hearing Brahms lullaby. I am scarred by that challenge we had earlier in the year.