Chord & FretG#7(b9) — dominant flat ninth
Also written Ab7(b9) — the same chord, spelled the other way.
Notes in G#7(b9): G# – B# – D# – F# – AFormula: 1 – 3 – 5 – b7 – b9In the formula, the numbers count steps of the major scale starting from the note that names the chord; "b" lowers a half step, "#" raises one — and a slash names the bass note.
The 7(b9) is a dramatic dominant. The minor ninth intensifies the resolution, especially when the target chord is minor.
The same chord on all four instruments
Where to use it: A dominant that resolves to a minor chord.
The shapes of G#7(b9) don't end on this page — the whole neck holds dozens. In Chord & Fret, you hear every shape strummed string by string, in each instrument's own voice; compare positions with their difficulty marked; and change the tuning — the shape rewrites itself. Start free. Unlock everything with Pro. Plays offline.
See the whole neck in Chord & Fret →Part of the Altered dominants family.