Gmaj9 Chord on Guitar
Gmaj9 = G – B – D – F# – A (Root, Major 3rd, Perfect 5th, Major 7th, Major 9th)
Gmaj9 takes the Gmaj7 barre one step further, moving the high e string up two frets to add the ninth above the major seventh already present, the same construction that turns F#maj7 into F#maj9 a fret down.
G-B-F#-A: root, major third, major seventh, and ninth, with the fifth dropped from this compact voicing to make room. The half-step seventh below the root paired with the whole-step ninth above it produces that dreamy, floating quality strongly associated with bossa nova and jazz balladry rather than plain major-key resolution. As I in G major it's a rich tonic color, and it works equally well as a lush IVmaj9 substitute wherever a plain Gmaj7 already fits a chart that wants extra shimmer.
Fingerings
Barre (3rd fret)
How to Practice It
If Gmaj7 is already solid, this is a single-string adjustment: move the high e-string finger up two frets from the root to the ninth, the identical physical motion that turns G7 into G9. Listen carefully to whether both the major seventh and the ninth are ringing distinctly rather than blurring together, since a maj9 chord that isn't cleanly fretted tends to collapse into an ambiguous cluster instead of the specific lush color it's meant to deliver.
Common Progressions
- Gmaj9 – C – Gmaj9 (a static lush-tonic vamp in G major)
- Em9 – A7 – Dm7 – Gmaj9 (a jazz-tinged progression resolving into a rich IVmaj9-style color)
- Gmaj9 – F – C (a bossa-nova-influenced descending color sequence)
- C – Gmaj9 (I – IVmaj9, softening the subdominant in C major)
FAQ
- How does Gmaj9 relate to Gmaj7?
- It's built by taking the Gmaj7 shape and raising the high e string two frets, from the root up to the ninth, while every other string stays on the same notes as the maj7 voicing.
- Which chord tone is missing from this Gmaj9 shape?
- The fifth (D) doesn't survive the six-string translation — a full maj9 stacks five distinct pitches, one more than can comfortably ring here alongside the root, third, seventh, and ninth, so the fifth is the one left out.
- Why is Gmaj9 linked so strongly to bossa nova and jazz?
- The combination of a major seventh and a ninth stacked above the triad creates a lush, unresolved-but-not-tense color that those genres lean on heavily for their characteristic floating, sophisticated harmonic texture.
- Is Gmaj9 hard to play?
- Not if Gmaj7 is already comfortable — it's the identical barre with one finger repositioned, so the physical demand barely increases even as the harmonic richness does.
- Can Gmaj9 replace a plain G major or Gmaj7 in a chart?
- Often yes, particularly in jazz or bossa-flavored material, since it contains the triad's essential identity plus two consonant color tones that rarely clash with a melody or other harmony happening above it.
Gmaj9 on other instruments: Gmaj9 on Piano. Related: how chords are built, chord finder.