I don't know... I wish this was 100% true, because I think that playing a style together with a wav or mp3 file is the best way to make it sound really authentic, but I don't trust much Ketron from this point of view. They have great ideas, but implement them poorly; just to make an example, right now SD1 owners from U.S. are sending their units to AJ to install a (much needed) expansion kit. Why Ketron didn't think of that in the first place? It's like they always leave things unfinished.