For a free plugin, like its predecessor, Spook Keys, this baby simulates the monophonic sound of a waveform being controlled by pitch (Theremin) using MIDI notation. This version expands the ability to control the tone of the theremin-like sound outputted, along with an increased range of LFO's and whatnot, to make the sound more detailed and interesting.
The presets just show the basic functions of what this thing can sound like. Nothing too special, but compared to its predecessor it is definetly superior with the ability to use different sounds other than the sine wave.
The other great yet simple feature is the ability to preview the sound using just your mouse clicking inside the box to move around the dot. Very useful if you intend on doing a pseudo-live theremin sound recording using sound recording software instead of MIDI notes.
Now I'm not entirely sure yet, but if it were possible to go beyond the pitch limit given on this plugin, it would be great. (Make aliased noises) Otherwise there's no bugs here, and sounds like a theremin. Interface is clean and intuitive. Most importantly, it's free!