Guitar Goodies: 7th Chords

There are five types of 7th chords.

The five types of 7th chords are major 7, dominant 7, minor 7, diminished 7, half diminished 7.

The major 7 chord has the intervals 1, 3, 5, 7. The nomenclature (symbol) in the key of c is C or C MAJ7.

The dominant 7 has the intervals 1, 3, 5, b7 (b = flat). The nomenclature (symbol) in the key of c is C 7

The minor 7 has the intervals 1, b3, 5, b7. The nomenclature (symbol) in the key of c is C min7 or C-7.

The diminished 7 has the intervals 1, b3, b5, bb7 The nomenclature (symbol) in the key of c is C dim7 or C o7.

The half diminished 7 has the intervals 1, b3, b5, b7. The nomenclature (symbol) in the key of c is C m7b5.

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