Seventh Chord Types

General

– where as a Classic 3 Note Chord is “Clean”, when we add a fourth Note we Double the Content of Harmonic Information Hitting our Brain in Terms of Relationship and the Chord itself

– basically you Add the 7th Note of a Specific Scale Up from the Root

Examples

Major 7th = Major3rd /  Minor3rd / Major3rd (Classic Major Chord with a Major3rd on Top)

Minor 7th = Minor3rd /  Major3rd / Minor3rd (Classic Minor Chord with a Minor3rd on Top)

Dominant 7th = Major3rd /  Minor3rd /  Minor3rd (kind of “In Between” Sound without establishing a concrete Feeling of Major or Minor)

Half-Diminished 7th = Minor3rd / Minor3rd / Major3rd (Diminished Triad as Basis with a Major3rd on Top – in Jazz called Minor 7th Flat 5 Chord shortly min7b5)

Diminished 7th = Minor3rd / Minor3rd / Minor3rd (3x Minor 3rd with a double flatted 7th on Top – C,Eb,Gb,Bbb) – has Type of “Sherlock Holmes” Sound – Mystery

Seventh Notation