89.137Apply it to “Mack the Knife”

Conceptually, without reproducing its full copyrighted melody:

Early chorus:

two-beat bass and occasional RH responses.

Later:

walking quarters continue unwaveringly.

RH accompaniment becomes increasingly syncopated.

Melody should float independently above both.

At a late chorus climax:

allow block/melody/bass rhythm to synchronize briefly like a big-band shout.

Then separate again.

This gives the arrangement actual ensemble behavior rather than merely changing chord voicings.