Having downloaded the expansion board sounds generously offered by Mike, it made me very aware of that MEMORY button on the sounds selection ( which I had been ignoring).
So I started to access it with along with a lot of the sounds which I had set in registrations I composed/collected from many of SZ contributors over the years.
It is amazing the variety of sounds which are in that function which i have been overlooking for ages.
Could they be sounds off the other expansion boards, or just computer generated extras by the SZ's themselves?

Ray