I should preface this with that I only have a 25 key keyboard. That said, I think it would be in an accommodating audio/visual feature, if you could move around the instruments in the Construct view. For me, it would be fun so that when you find interesting combinations on the keyboard you could recreate them visually. Besides, it adds a bit of that “app” functionality to SD – which is a very powerful platform. Whether or not it would be a profitable, I have no way of knowing, but it would add a potentially fun feature. What would Desi Arnez think? You gotta check this out: http://www.bing.com/videos/search?q=Desi+Arnez&FORM=VIRE1#view=detail&mid=D991E8360B46947ECD22D991E8360B46947ECD22