Today represents the polar extreme of "Form," from two days ago. Whereas that was a lifeless execution of an essentially arbitrary "musical machine," today is the opposite: totally unfocused, meandering and meaningless "raw emotion." This is not deliberately a nod to any particular composer, but I'm sure we've all heard endless varieties of this basic thing. It drips with "feeling" to the total exclusion of thought or craftsmanship (though I take credit for the rather poor piano playing).
Quite literally the driving force behind the car. Function.