This video is a good starting point for understanding melody and chords:
More videos and tutorials on Youtube and IG
This guide shows how to read Nashville style chord charts:
The sheets below show how the scale-theory is applied to other instruments.
These show how to play the two-handed versions of the chords from the app:
These show how you can play the same chords on the guitar:
These show how to play the melody lines on guitar:
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