geetarman:

Regarding this
"I noticed the first time through the chorus it is rather "plain". The second time through there is some additonal "fill in" and the third/last time goes back to "plain". Is there a way to have a 3 play with the "fill in"?

There is also a setting which allows BIAB to "embellish" the song on the "middle chorus".
If that is enabled, it acts the way you noted above. Otherwise it plays through the song and only adheres to the Part Markers.

Good Luck!
LLOYD S