clarry: Would you be a friend? I like your, uh, minibrot? Or is that a low rez aliased render of the big one?
I wrote the code to render the Mandelbrot set by myself (in Python with Numpy and Pillow, might have used Cython; this is pretty easy to do, and a good exercise if you are learning to program or learning a new language). I originally used random colors to show how fast points escape, but I decided to change the background in response to a rather nasty avatar that a couple of other users used at some point.
dtgreene: Only 2, unfortunately. (Though there are some buttons you can press to change the octave.)
SirPrimalform: Ah, I love big two hand chords so I won't buy anything less than three these days. I hope it's right for what you want, naturally.
It is good for now, at least. Of course, I can see why one might want a bigger keyboard, and I might opt for one eventually, but this should do for now.
(Anyway, at the moment I may try writing some computer programs that work with MIDI; maybe try transforming the keyboard's MIDI output in various ways.)