9865 / 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 →
81.75Level 38 — two-handed independence
LH: simple C-major triadic pattern.
RH: D-major triadic pattern.
Each must be playable alone.
Then combine.
This is not merely harmony practice.
It is coordination practice.