9th sus4 chords

The ninth suspended chords are less common than the regular sus4 and sus2 as well as the 7sus4. The 9th sus chord is almost similar to the dominant 9th chord, but in many cases the fingerings are unnatural to play, mostly because of the fourth tone. In general, it's hard to find any fingerings that inclde opens strings for this chord category.

The diagrams below are suggestions of how to play these chords (see also additional versions, including movable shapes, further below).

9th sus4

C9sus4

  • C9sus4 chord diagram X3X331

D9sus4

  • d9sus4 chord diagram X55555

E9sus4

  • E9sus4 chord diagram 0002020

F9sus4

  • F9sus4 chord diagram X88888

G9sus4

  • G9sus4 chord diagram 300011

A9sus4

  • A9sus4 chord diagram XX7787

B9sus4

  • B9sus4 chord diagram X22222

More chords

None

Comments

The 9sus4 is built with five notes, but at least one note is often left out, making it into a four-note chord.

Notice that D9sus4 also can be barred over all strings (555555), which makes it an inverted version, D9sus4/A that is.

A, quite peculiar, open position option for A9sus4 is X00000.

Inversions

Open position alternatives for these chords are mostly found when the root is not the bass note. Notice that some of this version will not underline the character of the chord very well.

C9sus4/Bb: X10011
D9sus4/A: X00010
E9sus4/F#: 200202
F9sus4/Bb: X11011
E9sus4/F#: 200202
G9sus4/A: X00011
B9sus4/E: 002222

9th suspended chords with flats and sharps

Since these are not played all that often, they are only presented in shortened notation:

C sharp / D flat 9sus4: X44444
D sharp / E flat 9sus4: X66666
F sharp / G flat 9sus4: XX4454 / 2X2100
G sharp / A flat 9sus4: XX6676
A sharp / B flat 9sus4: X11111

Movable shape

Two moveable shapes for this chord category are C9sus4 as X33333 and 8X8766.

Chord formula

The ninth suspended fourth is built with the formula 1-4-5-b7-9.

Chord progressions

Progressions including this chord type:

G9sus4 - G7 - F7 - C7

Em - Am - d9sus4 - D7 - G

D - Dmaj7 - D6 - D - A9sus4 - A7 - D

In the famous song "California Dreaming" a 9sus4 to 7th change is used:

Am - G - F - G - E9sus4 - E7  (capo 4)

9sus2?

No, this chord type cannot exists since the 9 interval and the 2 interval are the same note.

C7b9 and C7#9 compared to C9sus4

The C9sus4 formula 1-4-5-b7-9 are quite similar with both C7b9 (a 1-3-5-b7-b9) and C7b9 (a 1-3-5-b7-#9).

11th and C9sus4 relationship

Even more related are the dominant 11th, which actually can be seen as the same chord as teh suspended ninth. This can be seen in the comparison between C9sus4 with the notes C - F - G - Bb - D and C11 with the notes C - E - G - Bb - D - F. The only difference are theoretical, in regards of the slightly altered note order.

Alternative chord names

C9sus4 is theoretically identical with Bb/C, C#9sus4 is theoretically identical with B/C# and so on.



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