5.24Harmonic rhythm

Another important concept:

harmonic rhythm means how often the chords change.

Suppose:

C | Am | Dm | G7

One chord per bar.

Now play each chord for only two beats:

C Am | Dm G7

Same chords.

Faster harmonic rhythm.

It feels more active.

Or hold:

C for two bars,

then:

F | G7 | C

Slower harmonic rhythm at first.

Arranging is partly deciding when harmony changes, not just which harmony.