thing that your “noodling” with BIAB brought to mind...there is something in this style, a kind of smooth jazz, that just simply “works” and sounds enjoyable, interesting, etc. no matter what arrangement of (sensible) chord changes are set up..maybe it’s that melody isn’t quite so important in a lyric-less work like this. But selection of bells and whistles, in a skilled hand, generates something quite pleasant and rewarding to the ear...thanks for doing it!!