Bb 9 sharp 11 Guitar Chord

Bb9♯11 9ths · 6 notes ·Symbol : 9♯11

Chord Notes

Bb R
D 3
F 5
Ab ♭7
C 9
E ♯11

Solfège : Sib – Ré – Fa – Lab – Do – Mi

Chord Structure

Bb 2T D T+½ F T+½ Ab 2T C 2T E

About this chord

The 9♯11 chord is the dominant ninth enriched with an augmented fourth (tritone), derived from the Lydian Mixolydian mode. This double tension creates a floating, very jazz-sounding color. Scott Henderson and Herbie Hancock use it on dominants to avoid clichés and maintain sophisticated harmonic language.

See all diagrams and fretboard positions for Bb 9 sharp 11 in the interactive ScalaBass app.

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Same chord in other keys