I just remembered there's a pretty good Theremin between the Psycho and Out of Africa episodes on the Cinemania demo that came with the EW02 sound card! 7k manages Ok

If I may be so cheeky as to bring yo'all back to the original subject....
One way in which owners of all past models are able to converse/learn/swap ideas etc around our way (North Wilts - England) is by being a member of our Technics Club which meets fortnightly and has members of all ages with all ages of Technics keyboards...
Our concept/strategy/policy (call it what you will) is that we learn from each other and we are strictly non-commercial - in other words we are not out to sell any member anything and are not affiliated to any Retail Music Store.
We try to introduce a new subject each meeting - so for example the last meeting was all about buttons you press and hold down to obtain additional displays on screen.
You'd be surprised how many there are like that on all models of technics keyboards and how little our group new about them!!!!