Jakob, I really have to say that you don't get what we have been talking about and you really don't understand what we 'jazz' (that is all I have been talking about!) musicians want from Band-in-a-Box. My criticism was about the quality of bass lines, not about sound. Plus, you will also find that most jazz musicians wouldn't dream of taking BB on a gig. Sacrilege!
Believe me, these new bass RealTracks and improvements to RealStyles for JAZZ are a huge improvement. If you, or your audience don't really care about the quality of the music (so-called backing tracks), please don't invade my world. And please don't try to influence the programmers of software that has always had the highest of musical standards.
Although, after listening to the backing on this video, I could concede that there might be a few exceptions to the success of a jazz musician taking BB on a gig - guitar or keyboards maybe:
https://www.youtube.com/watch?v=0f47ISKaOBY&feature=mfu_in_order&list=ULThe above recorded with Band in a Box 2011 (Real Tracks) and a Pod 2.0
So, I still insist that the answer to the original question is, "Not very good compared to RealTracks!"
Peace.
