Classical · Jazz · RockC → F / A / Db · pick an exit
1+ (= 3+ = b6+) → three keys
Same symmetry trick, major-3rd flavor: an augmented triadrespells three ways, each one a 5+ of a different key. Enter as 1+, leave toward 4, 6 major, or b2.
hear it in whole-tone cues (the Debussy school)
Lead-in — how players set it upRaise the 5th of a held 1 — the aug appears mid-chord.Or approach from 5 — the aug reads as 5+ before it pivots.Or grow it from the line cliché — the climb pauses mid-rung.Follow — where it usually goesResolve to whichever of the three keys serves the melody.Land on 4's world and cadence there — the nearest exit.Or whole-tone drift — augs walking in major 3rds erase the map.
The augmented chord's three notes are three doorbells — sustain the one that's a half step under your target key's root.Target tones (in C)C+ — lean on E (3)F — lean on A (3)A — lean on C# (3)Db — lean on F (3)Half-step wiresE → F · G# → A · F ↘ E · C → C# · A ↘ AbAcross the borderhold these into F: C