Chord · Altered Dom.

G7♯9 — G Dominant 7th ♯9

G7♯9 is the G dominant 7th ♯9 chord. It is built on the root G with major 3rd (B), perfect 5th (D), minor 7th (F) and augmented 9th (A♯) above it — the formula 1 3 5 ♭7 ♯9, sounding the notes G B D F 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 G7♯9.

Root
G
Quality
Dominant 7th ♯9
Formula
1 3 5 ♭7 ♯9
Notes
G B D F A♯

On the keyboard

G7♯9 on the piano keyboard: G B D F A♯GBDFA♯

The notes of G7♯9

DegreeNoteInterval from the rootPitch
1GrootG4
3Bmajor 3rdB4
5Dperfect 5thD5
♭7Fminor 7thF5
♯9A♯augmented 9thA♯5

Other altered dom. on G

Dominant 7th ♯9 chords on every root

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