Example 1. Progression in the key of Ab major
Yes. Just for the fun of it, let’s do this in the key of Ab major. It is time to bring out the scourge of guitar players, the dark destroyer of cowboy chordists, to flex our barre-chord muscles, to burst our sinews and wrestle with this beast.
Here is our progression in the key of Ab major.
Try playing this barre-chord muscle-max workout through a five-minute song I dare you! haha 
No.
Okay.
In that case here is a short audio sample: