Jim I replied to your request in the General Arranger forum.  There is a .SET file attached to this post, which contains at least one very simple "free play style."
http://www.synthzone.com/forum/ubbthreads.php/topics/322331#Post322331It was developed for the PA50/PA80 but it should work on any Korg arranger.  Hope this gets you what you need.  -Ted