The chord voicings in the piano are super nice! The instrumental playing is masterful, and everything is tastefully rendered.
This went in a lot of great directions I wasn't expecting! The arrangement is always moving and a lot of the instrumental choices weren't obvious. I imagined some sort of animated forest based fantasy movie.
Nit picky mixing thing, bass frequencies can be a bit hard to pop out of the mix sometimes without blowing up the meters. The bass guitar was a bit on the quiet side. If you want to give it more presence, try adding a touch of distortion to it (or, as I personally prefer, overdrive). Don't add so much that it starts to snarl and growl, but a tiny bit will help reinforce some of the upper partials in the frequency spectrum so it will give the illusion of louder bass without having to actually bump up the low end.
All in all, really great work! I wouldn't mind hearing more in this style.