Question: what is the difference between minor and major keys?
Answer: What Makes a Song Minor or Major? The difference between a major and minor chord comes down to one, simple change: the 3rd in a scale. A major chord contains the 1st, 3rd, and 5th degree of the major scale. A minor chord contains the 1st, flattened 3rd, and 5th degree of the major scale of that note.