My husband played a concert in the conference center in SLC in ’86. As I recall it was a 3 manual Sipe. He also plays a transcription of Pictures. It works really well on organ. Fancy footwork isn’t that impressive really……It’s just another keyboard and you learn how to get around on it. But it IS fun to watch. Before I was an organist it was fascinating to me. When I learned how to do it it was just fun!!