f(t)19 / 35Choir piano house
z->z^2+c
Square it, add c, repeat. This rule draws the Mandelbrot set.
The equation
zn+1 = zn2 + c
What the equation decides
The call and response. Choir calls of 2, 3 and 4 notes are each one lap of an orbit: its period sets how many notes, its shape sets their order and lengths.
What was composed
Chorus melody, chords, piano and drums.