Chord & FretAbmaj9 — major ninth
Also written G#maj9 — the same chord, spelled the other way.
Notes in Abmaj9: Ab – C – Eb – G – BbFormula: 1 – 3 – 5 – 7 – 9In 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 maj9 is the maj7 with the ninth added. It widens the triad without losing its restful character, with a romantic sheen.
The same chord on all four instruments
Where to use it: Ballads, bossa nova and neo-soul love this chord to open or close a song. It is the natural pick when a plain maj7 feels too plain — the ninth adds an extra glow without disturbing the rest.
Every region of the neck hides more shapes of Abmaj9. In Chord & Fret, you hear every shape strummed string by string, in each instrument's own voice; open every variation on the neck, grouped by bass note; 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 Extended family.