10208 / 18210 · Workshop 84 — Modulation Architecture: Pivot Chords, Direct Modulation, Common-Tone Modulation, Sequential Modulation, and Making Key Changes Feel Inevitable← prev⊞ allnext →
84.67Establish A minor
Use:
E7→Am.
The G♯ is crucial.
C major has G natural.
G♯ introduces:
leading tone to A.
That one note strongly announces minor tonicization/modulation.