It is a chiptune recreation of the classic Miles Davis album Kind of Blue.
If you have not gotten into Jazz it is a great album to listen to as it is a classic and it is easy going. (To be honest some of you will take Miles Davis for granted and some will have no idea who I am talking about... So it is hard to know how to express myself... Anyway he should be listened to just to have an idea and for common knowledge about music even if not liking the music...)
What is amazing is that it is not versions of the songs but recreations, trying to get everything the same but Chiptune sounds galore.
It is a sad story to it as well, as the creator got sued for the cover and had to settle out of court for recreating a pixel version of the original album cover... He finally settled out of court.
There is links on the home/downloade page to read more about it...