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C♯min7(♭9)/B guitar shapes

Popular fretboard positions with fingering suggestions

Showing 8 of 26 playable shapes

About the chord

C♯ minor 7th flat 9th / B (3rd inversion)

The C♯ minor 7th flat 9th minor 7th flat 9th chord extends the minor 7th with a flat ninth D, creating a dark, eerie tension. The combination of the minor third E, minor seventh B, and flat ninth D produces a dissonant, haunting sound perfect for jazz, film scoring, and dramatic resolutions. With B in the bass, this voicing functions as the 3rd inversion of C♯ minor 7th flat 9th.

Root note: C♯
Bass note: B
Chord tones: 5
Playable shapes: 26

Chord tones

C♯EG♯BD

Notes & Intervals

Each note below shows how the chord is built from its root. This is the theory layer underneath the fretboard shapes.

C♯ Unison (Root) 1

The root anchors the chord and defines its tonal center.

E Minor Third ♭3

This note supplies the minor color and gives the chord its darker emotional pull.

G♯ Perfect Fifth 5

The fifth reinforces stability and gives the chord its strong harmonic frame.

B Minor Seventh ♭7

The minor seventh adds bluesy or jazzy tension that wants to move onward.

D Minor Ninth ♭9

The flat ninth adds sharper tension and a more dramatic clash.

Related Articles

Articles that reference this chord and explain how to use it in your playing.