I'm looking at the H9 Core for the harmonizer feature but I haven't found a demo that goes into detail on it much. Can it be programmed to do the harmony lead on, say, Take It On the Run by REO Speedwagon? Is it difficult to set something like that up? How far have you been able to take the harmonizer feature? What is it not able to do? Any info, links to examples and your own experience would be great. Thanks.