
Originally Posted by
mjo
So, the "B" section in this tune (using the chart above) is a simple ii-V-i in B minor. It's approached via the V chord at the end of A2 section.
Yes. A I-ii-V repeated 3 times, to be precise.

Originally Posted by
mjo
The added 9 or 6/9 shown in the chart are just something Kessel added for harmonic, (or should that be melodic) interest- ??
Partly. The melody on the Bm uses the melodic minor scale, featuring the 6 and 9 quite strongly. So he's kind of reflecting that.
In many charts, too, the 2nd half of the Bm bar is marked as Bm6, or G#m7b5 (Bm/G#).
Code:
Bm Bm6
-------------------|------------------------------
--0--2--3----------|--------------------------------
-------------1-3-4-|---------------------------------
-----------4-------|-------------------------------
-------------------|--------------------------------
-------------------|------------------------------
Or here's a chord melody idea for that part:
Code:
Bm Bm/G#
---7-9-10-------6-7-|------------------------------
-7---------7--9-----|--------------------------------
-7---------7--------|---------------------------------
-9---------6--------|-------------------------------
--------------------|--------------------------------
--------------------|------------------------------

Originally Posted by
mjo
If that's true, would the minor-Maj 7 on the final line, (A3 section) be interpreted the same way ??
That's not part of the main structure; it's a repeat of his (self-composed) intro, with that distinctive chromatic descent. (Have a listen to the link I posted above.)