BookatlasPiano Rabbit Hole: Improvisation Theory & Practice
9808 / 18210 · Workshop 81 — Polychords and Bitonal Hearing: Two Harmonic Worlds at Once, Upper Structure vs. True Polychord, Controlled Clashes, and Making “Wrong” Chords Sound Intentional← prev⊞ allnext →

81.18Register converts crunch into color

This is one of the most important practical rules.

Close semitone:

foreground dissonance.

Wide-spaced equivalent:

color/tension.

Same pitch classes.

Different perception.