Ok cool, thanks for the info, I have a bunch to learn about this kind of setup, but this definitely helps. I have only worked with note on/off and pitch in midi. I have not used midi to control anything else.
I like the idea of just synching the A4 to Octatrack, seems more intuitive. Also need to understand how program changes can be done from the Octatrack to the A4.
https://soundcloud.com/marco-frodo