Quite a groove you got going in this. I liked the second version with Mrs DB slightly better as it added a new texture with her voice. This isn't what I typically like as a stand-alone song, but I can see huge potential in using this in a movie or TV show between scenes as a 20-30 sec transition between scenes etc. It's just my short attention span I guess - but not everyone is like that..
Super production work on this though!
Best
Paul