9378 / 18210 · Workshop 77 — Playing *Through* Changes Instead of *On* Changes: Harmonic Landmarks, Guide-Tone Networks, Common-Tone Paths, and Hearing the Form Ahead← prev⊞ allnext →
77.22Harmonic reduction
This is enormously useful.
A complicated progression may reduce to:
I → IV → V → I.
Or:
tonic region → temporary key → dominant → tonic.
The detailed chart is the surface.
Reduction is the map.