Chord · 9ths

G♯dim7/9 — G♯ Diminished 7th / 9th

G♯dim7/9 is the G♯ diminished 7th / 9th chord. It is built on the root G♯ with minor 3rd (B), diminished 5th (D), major 6th (E♯) and major 9th (A♯) above it — the formula 1 ♭3 ♭5 6 9, sounding the notes G♯ B D E♯ A♯. On the piano it sits at G# (octave 4) and above in the library's voicing; the same 5 notes in any octave are still G♯dim7/9.

Root
G♯
Quality
Diminished 7th / 9th
Formula
1 ♭3 ♭5 6 9
Notes
G♯ B D E♯ A♯

On the keyboard

G♯dim7/9 on the piano keyboard: G♯ B D E♯ A♯G♯BDE♯A♯

The notes of G♯dim7/9

DegreeNoteInterval from the rootPitch
1G♯rootG♯4
♭3Bminor 3rdB4
♭5Ddiminished 5thD5
6E♯major 6thE♯5
9A♯major 9thA♯5

Other 9ths on G♯

Diminished 7th / 9th chords on every root

Part of the chord reference. See also the scales and the keys.