26.84A complete pop arrangement

Let's build a four-chord song:

C → G → Am → F

Intro

RH ostinato, LH roots.

Verse 1

single bass + sparse inversions.

Verse 2

add rhythmic RH pulse.

Pre-chorus

use G/B and rising activity.

Chorus

LH octaves + wider RH chords.

Breakdown

melody alone or single-note accompaniment.

Final chorus

octave melody + fuller texture.

Ending

F → Fm → Cadd9.

Same basic harmonic vocabulary throughout.