The V12 and V15 visualizations showed the movement of tonal centers, but they gave no clue about where tonality came from, what gave rise to tonal centers.
I started thinking about ways to show more of the “guts” of musical perception. For example: consonance and dissonance arise from the interaction of harmonics; how can that be shown?
I tried that in V17:
The results were singularly uninteresting.