Santantoni: Thanks for the link from pgMusic. After reading that I can understand why BIAB will not add real-time functionality. It preprocesses the progression of chords to allow for maximum variety in the style played. This could not be done easily in an arranger, unless they did some type of AI predictive algorithm to "guess" what was likely to come next based on what was previously played. Rather unlikely to see that in BIAB. Wouldn't be surprised to see that from Yamaha at some point in the future.