9845 / 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 →
81.55Level 24 — C major vs E♭ major
Lower ostinato:
C-E-G.
Upper:
E♭-G-B♭.
Both share G.
This common tone helps glue two conflicting third systems:
E vs E♭.
Excellent exercise.