BookatlasPiano Rabbit Hole: Improvisation Theory & Practice
7305 / 18210 · Workshop 56 — “Mack the Knife” Prelude: Walking Bass, Two-Beat-to-Four-Beat Escalation, Chorus Building, Modulation, and Making Repetition Grow← prev⊞ allnext →

56.33Level 10 — modulation up

Now a classic escalation device:

raise the entire song by a semitone.

C → D♭.

Or whole tone:

C → D.

The tune itself stays the same relationally.

The new key feels brighter/higher simply due to register and pitch level.