BIAB has its own styles in its own proprietary format. BIAB styles are more sophisticated than arranger styles in several respects. BIAB uses these to generate songs. AFAIK, they cannot be used in real time. AFAIK, there is no BIAB-arranger conversion utility. I bet of lot of us would be interested in a real-time interactive BIAB, with its newly added vocal harmony and plug-in support.