9803 / 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 →
81.13Play it three ways
Version A
Clustered middle register.
Harsh.
Version B
C chord low.
B♭ chord high.
Much clearer.
Version C
Remove E from lower C triad.
LH C-G.
RH B♭-D-F.
Now:
C9sus.
The polychord collapses into a familiar suspended dominant.