Notes:

Chord progression:
| I | V | I | IV | I | V | IV | I |
Example in Ab major:
| Ab | Eb | Ab | Db | Ab | Eb | Db | Ab |

IMO, with a progression like this, very straightforwardly Ab major and always resolving back home to the Ab, you don’t need to follow the chords as much as you just need to time your resolutions so that you land on chord tones that belong to the Ab chord as the progression returns to Ab.

Scale Diagrams:

• Ab Ionian
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