Nice!
Really enjoyed this. Calm, groovy atmosphere that evolves nicely. The drum programming in particular was well done and interesting to listen to. The mix changed up enough and had a enough backing variance to remain interesting throughout, which can be hard to do especially with a piece in this style. It's kind of a weird ambient acid jazz sort of piece.
Unfortunately, just as the song starts to pick up momentum it sounds like you just gave up on it! This song could have gone on considerably longer I think, but you say it's an old song so I imagine it's a moot point now, nonetheless, I would've liked it longer personally! :)
Anyways, overall this was quite good!
Cheers,
Daniel