For me theremin play is about on-pitch fluid articulation, not robotic pitch perfect notes, a piano can do that. We are in one of life's rare moments. This may be the finest example of what I am talking about. There is a reason they are called Masters. Performed by Peter Pringle.
dewster said: "I don't know what to make of the huge bump around 1MHz (2mH inductor). I took the data twice and it showed up both times."
The spike frequency I see screams validation that something happens around 900 kHz, the mystical tuning point of the Electrodeum. This is a natural phenomenon like the others involved, the speed or velocity found in radio waves. Is it unique to the theremin? It has purpose, but who else would care?
Christopher 
- First Day of Spring, the Equinox, a New Beginning -
dewster said: "traditional antennas are so thin it often isn't at all obvious what is being addressed by the player's hands, thus minimizing much of the dramatic effect ("why's that guy waving his hands around?" or "why is that girl standing so still and moving her fingers?"). Plates or larger diameter tubes would be much clearer in this respect."