For anyone wanting to play the therimin you can download a “desktop” version at this site:
Where’s Percy Grainger when you need him…
Oh, No…
The Theremin discussion has returned!
Now that I’ve downloaded the free Theremin,I may make the theme tume from ‘Forbidden Planet’ my next soundbite on ‘Clips and Snips’ 
On second thoughts,Tony Higgins might banish me to the Forbidden Planet if I do! 
At least I’d have the Crystal People to play to! 
An Ed. Wood fan just HAS to be into Theremins (I’m NOT so keen on Cashmire sweaters though! 
).
Great link, thanks! 
The freeware is fun–hey I can play, er, lamp-winds? without a piano keyboard!
And the historical part is great.