BookatlasPiano Rabbit Hole: Improvisation Theory & Practice
9799 / 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 →

81.9Level 2 — common tones make polychords easier

Try:

C major + A minor.

C-E-G

plus:

A-C-E.

They share:

C

E.

The combination is highly consonant.

You might simply hear:

Am7/C

or C6.

Not strongly polychordal.