A plain major chord on 2 — no dominant 7, no resolution agenda. The raised 4th it carries (#4 of the key) floats instead of pushing. Pure color: it visits nothing, it just glows.
hear it in “Eight Days a Week” opening — the bright 2
Lead-in — how players set it upBest from a wide-open 1 — often with the 5th in the melody.From 5 — the 2 then reads as a mirage of another dominant.Or vamp 1 alone first; the shimmer needs a plain wall.Follow — where it usually goesBack to 1, or let 2 pivot upward into 5-key brightness.Let 2 finally act — as 2⁷ it becomes a real secondary dominant.Or drift plagal: 2 to 4 to 1, daydream logic.
The ♯4 over the 2-major is the whole flavor — hang on it, Lydian-style; never resolve it to 4 or the shimmer dies.Target tones (in C)C — lean on E (3)D — lean on F# (3)C — lean on E (3)Half-step wiresG ↘ F# · F# → G