I–V–vi–IV (the “four chords”) · A major

A – E – F♯m – D

IA · A C♯ E
VE · E G♯ B
viF♯m · F♯ A C♯
IVD · D F♯ A

A – E – F♯m – D: the four chords under a great many pop songs — the verse of “Let It Be” is this progression in C. In A major they are I, V, vi and IV.

Smooth voicings — root in the left hand

The right hand takes whichever inversion is nearest, so it moves by a step or two instead of jumping.

A I · root position

A1A1E5C♯3

1 · 3 · 5 over A in the bass

E V · first inversion

E1B5E1G♯3

3 · 5 · 1 over E in the bass

F♯m vi · first inversion

A♭3F♯1C♯5F♯1

♭3 · 5 · 1 over F♯ in the bass

D IV · second inversion

D1A5D1F♯3

5 · 1 · 3 over D in the bass

Why it works

Two major chords, a minor, a major: the minor chord in third place is the shadow that makes the return to IV and I feel bright. Played with the smooth voicings above, the right hand moves by a step or two between every chord.

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