Understand and Play the G9(#5) Guitar Chord
Spelled G, B, D#, F and A, G9#5 is the G ninth sharp five chord, with the root, major third, raised fifth, minor seventh and ninth above its root.
The single voicing on this page spans fret 3 to fret 5. The major third and the minor seventh form the same tritone as in any dominant chord, which gives it its pull.
The chord tones all belong to the G whole-tone scale, a good starting scale when you improvise over this chord. The interactive fretboard at the top lets you listen to each voicing as a strum and as an arpeggio, one string at a time.
G 9th with sharp 5th guitar chord is also written as G9(#5), G9#5, G9+5 or Gaug9.
Notes in the G 9(#5) chord:
Formula of the Dominant Ninth Sharp Fifth chord:
Formula: 1 3 #5 b7 9
G 9(#5) Chord Interactive Fretboard
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G 9(#5) Guitar Chord Diagrams
Position 1 Barre Movable
Finger Positions
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FAQ
What is G9#5 made of?
G9#5 is spelled G, B, D#, F and A. It stacks a root, a major third, a raised fifth, a minor seventh and a ninth. The D# is a semitone higher than the usual fifth D.
How is G9#5 different from G9?
G9 carries the perfect fifth D. G9#5 swaps it for D#, one semitone higher, and keeps G, B, F and A. The raised fifth is what makes it an altered dominant ninth.
How many ways can G9#5 be voiced?
G9#5 has one voicing, a barre voicing between fret 3 and fret 5. It uses no open strings.
Which scale works with G ninth sharp five?
The G Whole-Tone Scale (G, A, B, C#, D#, F) contains every chord tone. The ninth A and the minor seventh F are both part of it.