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A major ninth chord (e.g., Cmaj 9), as an extended chord, adds the major seventh along with the ninth to the major triad. Thus, a Cmaj 9 consists of C, E, G, B and D. When the symbol "9" is not preceded by the word "major" or "maj" (e.g., C 9), the chord is a dominant ninth.
Three types of ninth chords may be distinguished: dominant (9), major (M9), and minor (m9). [ 3 ] [ 4 ] They may easily be remembered as the chord quality of the seventh does not change with the addition of the second scale degree , [ 3 ] which is a major second in both major and minor , thus:
Ninth chords are built by adding a ninth to a seventh chord, either a major ninth [M9] or a minor ninth [m9]. A ninth chord includes the seventh; without the seventh, the chord is not an extended chord but an added tone chord—in this case, an add 9. Ninths can be added to any chord but are most commonly seen with major, minor, and dominant ...
0 4 7 9: Major Major sixth ninth chord ("6 add 9", [2] Nine six, [3] 6/9) Play ...
In harmonic analysis and on lead sheets, a C major chord can be notated as C, CM, CΔ, or Cmaj. A major triad is represented by the integer notation {0, 4, 7}. A major triad can also be described by its intervals: the interval between the bottom and middle notes is a major third, and the interval between the middle and top notes is a minor third.
A jazz sus chord [4] or 9sus4 chord is a dominant ninth chord with a suspended fourth, typically appearing on the dominant 5th degree of a major key. Functionally, it can be written as V 9sus4. For example, the jazz sus chord built on G, written as G 9sus4 has pitches G–C–D–F-A.
In the 18th century, ninth and eleventh chords were theorized as downward extensions of seventh chords, according to theories of supposition. [12]In 1722, Jean-Philippe Rameau first proposed the concept that ninth and eleventh chords are built from seventh chords by (the composer) placing a "supposed" bass one or two thirds below the fundamental bass or actual root of the chord. [13]
The dominant seventh sharp ninth chord's major third and augmented ninth are enharmonically equivalent to a minor-over-major chord's thirds, and the two can be somewhat interchangeable. Songs with a 7 ♯ 9 chord include " Purple Haze " and " Boogie Nights ".