Sounds like you made each section up on the fly, but it does sound pretty good.
I really do like the lead string sound you are using, is it recorded straight in or are you using a Kontakt Library for it at all?
I would be interested if you had a jazz-styled drum kit to go along with the next track of this style you make, I think it could sound really good with a Jazz kit personally;y (but that's just me) :)