Hi Ray, I certainly didn't know it (I don't think I know half of what the keyboard can do yet!) and I won't forget to add it to a tips section as soon as I can.
As JD knows, I'm envious of his rack of 4 expansion boards
I have 1 and 2 but simply can't justify 3 and 4 as of yet. Maybe when the kids have finished University (I have one studying for a Masters Degree in Russia and one about to go to Uni).
Incidentally, apparently Russian food is not extremely palatable from a daughter's point of perspective but it does appear to be extremely expensive from a dad's point of perspective haha. In fact, dad suspects that the vast majority of the food might come in clear liquid form... out of a glass :)))
The extra sounds on the boards are delightful in my opinion but if you play mainly at home you could add a much greater variety of more realistic sounds by hooking up a computer and adding some (hundreds of) virtual instruments for the same costs. This is a whole new topic and learning experience though!