I think Roland would do well to create at least a few Free Play styles for the BK-9.

Or, someone familiar with the BK-9's Style Creator could make them.

Free Play styles are great for creating ambient atmospheric soundscapes...listening to some of the BK-9's great solo voices, they would sound pretty fine over such styles.

Perhaps someone could convert Yamaha's several Free Play styles to work in the BK-9?

Ian