A# 7 flat 9 Guitar Chord

A#7♭9 9ths · 5 notes ·Symbol : 7♭9

Chord Notes

Bb R
D 3
F 5
Ab ♭7
B ♭9

Solfège : Sib – Ré – Fa – Lab – Si

Chord Structure

Bb 2T D T+½ F T+½ Ab T+½ B

About this chord

The 7♭9 chord adds a flat ninth to the V7, considerably intensifying the dominant tension. Its flat ninth forms a semitone dissonance with the root, creating a powerful pull toward resolution. It is central to bebop vocabulary, especially in minor key cadences.

See all diagrams and fretboard positions for A# 7 flat 9 in the interactive ScalaBass app.

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Same chord in other keys