9879 / 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 → 81.89Practice Loop C — fixed lower triad
C major lower.
Cycle upper:
D
B♭
E♭
D♭
F♯.
Rate tension 1–5.