This feels like exploring a village full of old and kind people in a 2000's rpg that do nothing but walk around with their hands bended behind their back and talk about the "good ol' days". I LOVE THIS SO MUCH!!!! I cant wait for more :]
I don't mean to disrespect your effort, but it doesn't really have some essential jazz qualities. Try using less grided approach, drums should have more small details and be softer, also it sounds like every note of each instrument has the same volume, you need to mess more with dynamics(balance of loud and quiet sounds). Your composition is awesome but jazz is built for performers to decide how they want to play and all this rhythmic and melodic improvisation stuff is probably the hardest part of it. Especially when you program it in DAW. Good work, really want to hear what you'll make from now on.