Nope - I haven't seen any thereminists live. I don't even think Pere Ubu used one at the gig I went to - DT was busy hitting a cow bell with a hammer most of the time.
Bit of a breakthrough! Thought I'd see what the saw-tooth setting sounded like on the new amp. Ha - with a bit of knob twiddling, no more irritated mosquito. Now it's somewhere between an overweight bumble bee and a kazoo - which is somewhat enhanced by a little up-flick at the end of a note. It's rather pleasant, despite my recent assertions as to what sort of sound I wanted, and the word jaunty springs to mind. And by being less soft - less mellow than the sounds I was making before the notes seem more clearly defined.
So I would try a round. Alas my delay does not stretch beyond about a second, and my attempt to play London's Burning very quickly was doomed before it began, frankly. But - by speeding up the delay a bit I found I could beat time along with it with my left hand, at first counting 1 2 3 4 1 2 3 4 and then silently humming a little tune, pointing to the various notes of it with my right hand, echoing the beat of my left hand in my right by moving in little U shapes between notes - no knuckle extensions here.
I found I could play the same pattern at different pitches, and make variations on the basic pattern - sometimes even intentionally.
Was I in tune? I remain optimistic here - now and then I knew I hit a bad note, and I did not get that feeling all the time and, as each note was accompanied by it's predecessor, (and the note before that to a lesser extent) I suspect really bad relative pitch would have been quite apparent. With respect to being in tune I am taking a sort of Zen approach to learning - I have tunefulness in mind but do not consciously try to achieve it, instead I just allow my hands to go to the right place - working on the basis that I tend to learn [i]despite[/i] people's (including my own) best efforts to teach me.
One interesting thought. A while ago in some other topic I asked, jokingly, if one played a theremin so much as conducted it, given that one's body is a part of the circuit. Well, this felt very much like conducting, beating time with one hand, pointing to notes with the other.
This means I can now make lush drifty backgrounds [i]and[/i] a bouncy lead voice. Multi-tracking, here I come. I suspect I might be hauling my minidisc recorder out of whatever cupboard it is maturing in.
Also, I should think I'll be able to get a much longer delay using the iBook - set up a mike in front of the amp, use the minidisk to amplify the signal to line-out levels (I know - I should be the proper equipment - my music budget is spent out for a while) and feed it into the iBook, then figure out how to get it to play the echo but not the original note in garageband (is this perhaps something to do with wet mix/dry mix?) latency ceases to be an issue when everything it plays back is delayed anyway.
And I have a couple of points where I can record. In fact, if I recall correctly my minidisk recorder [i]has[/i] to be recording to get it to send the mike signal to the headphone socket, which provides a good level for the computer at full volume.