Singing this Note is IMPOSSIBLE!

That reminds me of a nearly simple graphic generated on The Internet (TM) years ago, lost today, where power was an equation that fit upon a squarish shape, maybe more of a slightly inverted diamond like shape with rounded corners, to which the antigravity the "line" made with the cursor of the mouse and its mild inertia in moving toward the line from any direction, albeit non-linear, was such that the "mouse" jumped inside the square suddenly, in and out. Never, would you see it near the line no matter how slow you were, the acceleration across the chaos ripple was the butterfly principle. 

Or, maybe. the hummingbird?🙃

I have never been able to locate this fourth of July fireworks of so simple a Gibvs free energy top as a computer is, veritably (capabilities being what they may), that piece if graphic software, so genius.