In my other post about setting up performance lists and performances, it was implied that in the past, arrangers were configured to facilitate "live" changes to voicing, styles, and perhaps other parameters as well. When would you say the paradigm shift to "User Programs" or "Performances" occurred? What would you say was the last, best Roland that was built around the old paradigm? Even though this is a Roland sub-forum, if your experience suggests that other brands are engineered this way, feel free to mention those too!