Chords have a mind of their own in the context of a song. In any given key, certain chords are much better at following the previous chord than others. The harmonic properties of chord
progressions lead our ears by a leash. For example, a song WANTS to end on the I chord. The song will feel incomplete or have a sense of ‘hanging’ if a song ends on any other chord.
In this PDF guide, you’ll discover how different chords work together.