Erik, Sorry I won't be doing the class in Yorkshire, though that sounds like a great idea.

Dick G, I'm sure you are an excellent player in loads of other tunings. I do what I do, it works for me, and seems to work well for alot of people backing traditional Irish music. In one week, you can only cover so much, granted I wouldn't be the one to teach a class in some other tuning for Irish music either. A class in comparative tunings seems like it might be more your bag, as teacher, student or perhaps, editor.