Darn, I've been earwormed by Jonathan Coulton's "Mandelbrot Set" for the past couple of days. And it's not as if the lyrics are even terribly singable. But they do explain the mathematics.
CHORUS
Take a point called Z in the complex plane
Let Z1 be Z squared plus C
And Z2 be Z1-squared-plus-C
And Z3 be Z2-squared-plus-C
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