https://www.musical-u.com/learn/hearing-chord-progressions-part-1-the-dominant-and-the-subdominant/
How would you like to be able to walk into any musical situation and already know the chords to any song, simply because you brought along your ears? https://www.musical-u.com/learn/hearing-chord-progressions-part-1-the-dominant-and-the-subdominant/