Harmonic Rhythm and Hypermeter

(This is a stub; my plan is write more on this topic soon,)

Harmonic Rhythm: The rate at which harmonies change.
Hypermeter: Meter on a larger scale, such as when bars are felt as beats.

In good or great compositions, most of us are unlikely to notice the harmonic rhythm and hypermeter,  unless it does something unexpected, or there is something wrong with it.

Here are some examples: