Ok, I will try this method. What I have figured out so far, I was able to fill the chord grid by using BIAB's Audio Chord Builder. It worked pretty must almost flawlessly. It missed by one chord.. I actually found this by accident, too. Happy Accident, I guess.

Once I had the chord grid filled, AND had the backing track to play like this, it failed to generate any real tracks for the keyboard part I tried.

The key is getting the chord grid filled, for me. Thanks, I'll update what happens..