91.108Apply it to “Mack the Knife”

Conceptually:

walking bass supplies stable quarter clock.

RH comping uses a recognizable syncopated cell.

Melody phrases independently.

Later chorus:

let the comping cell migrate into bass connectors.

At big-band-like climax:

all layers synchronize for one shout figure.

Then immediately restore independent swing.

This gives the arrangement rhythmic architecture, not merely thicker voicings.