Minor 9th chords
The Minor 9th (m9) chord can have a kind of mystic and ambient sound. The most common shape is easy to memorize if you are familiar with the 9th Chord. The difference is that one note is lowered (on the 4th string), which results in a longer stretch. The 1st and 6th strings are marked with "x" (the 1st string can be played if you prefer to bar the three highest strings). If we compare C9 with Cm9 we could see that the notes changes from C, D, E, Bb to C, D, Eb, Bb.
m9 (movable shape)
Notice that the shapes are the same (notice also the irregularity for Bm9). This means that the chords are movable and, therefore, you can easily find out how to play C#m9 /Dbm9, D#m9 /Ebm9, F#m9 /Gbm9, G#m9 /Abm9 and A#m9 /Bbm9 as well.
The less common minor 6th/9th chord can be played with a similar shape, for example Em6/9 as X7567X.
Minor 9th with flats and sharps
Additional chords in this category:
C sharp / D flat m9: X46444
D sharp / E flat m9: X68666
F sharp / G flat m9: 242224
G sharp / A flat m9: 464446
A sharp / B flat m9: X13111
The minor ninth is built with the formula 1-b3-5-b7-9.
Chord constructionCm9 x - C - Eb - Bb - D - x
Dm9 x - D - F - C - E - x
Em9 x - E - G - D - F# - x
Fm9 x - F - Ab - Eb - G - x
Gm9 x - G - Bb - F - A - x
Am9 x - A - C - G - B - x
Bm9 B - C# - A - D - x - x
Guitar versions of the chord
Notes in chordCm9 C - Eb - G - Bb - D
Dm9 D - F - A - C - E
Em9 E - G - B - D - F#
Fm9 F - Ab - C - Eb - G
Gm9 G - Bb - D - F - A
Am9 A - C - E - G - B
Bm9 B - D - F# - A - C#
The intervals are 1 – b3 – 5 – b7 – 9
Open minor 9 chords
The keys that have been left out has no good options for being played in open position, see instead the movable shapes below. An alternative for Am9 is X0200X, for Dm9 an alternative is XX0210 and for Bm9 an alternative is X20222.
Here are additional shapes in open position for this chord category:
F#m9 / Gbm9: 20212X / XX4200
Examples of progressions including minor 9th:
Bm9 - Amaj7 - Dmaj7
Dm9 - Am7 - Cmaj7
The minor 9th is well-suited in gypsy jazz and one possible progression is:
Em9 – Dm9 – C9
Voicings with bass note on 4th string
If you want to play the minor ninth with the bass note on fourth string, here are some voicings. Notice that the shapes are movable.
Dm9: XX10 10 10 12
Em9: XX12 12 12 14
Voicings with bass note on 6th string
If you want to play the minor ninth with the bass note on sixth string, here are voicings. Notice that the shapes are movable and that you need to bar two strings with your little finger.
Gm9: 8X810 10 X
It is also possible to play the minor 9th with the root on the 6th string, like Bm9: 7477XX, which demands a big stretch.