is show how to create space with large intervals and how the effect isn't spoiled even when the melody tends to consistently fill in those gaps.
The upper staff shows the exact notes, the lower staff the chords played. Note how often the lower staff contains a 3 note chord where the upper staff outlines an easily playable 4 note chord. This is done intentionally to emphasize the difference between spaced out harmonization and melodic dips into the lower register.