9837 / 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 →
81.47Level 20 — reduce upper chord
Lower:
C-E-G.
Upper:
only F♯-A from D major.
The listener may still infer D-major/Lydian color.
This gives:
less density
while preserving characteristic ♯11/13.