https://www.hoffmanacademy.com/blog/read-chord-symbols-piano/
- Best simple explanation from Hoffman Academy.
- 12 tones in chromatic scale
- Half step between each tone
- Major chords: root + major 3rd( 4 half steps) to third + minor 3rd (3 half steps) to fifth e.g. C
- Minor chords: root + minor 3rd to third + major 3rd to fifth e.g. Cm
- Diminished chords: root + minor 3rd to third + minor 3rd to fifth e.g. C dim
- Augmented chords: root + major 3rd to third + major 3rd to fifth e.g. C aug
- 7th chords: chord + minor 3rd. e.g. C7
- maj 7th chords: chord + major 3rd e.g. C maj7
