Gmaj9

Gmaj9 is G, B, D, F# and A, a major ninth. The shape this page opens on is written 300002, lowest string first.

Note by note. G is the root, B is the major third, D is the fifth, F# is the major seventh and A is the ninth.

Also written GM9, GΔ9, Gma9 or G major 9. The same chord either way; which spelling you meet depends on who wrote the chart.

There are 12 common shapes for Gmaj9 on the guitar, and 44 derived voicings in 5 families.

One note away. Change a single note of Gmaj9 and you have Gmaj7 (with one note taken away), Gmaj11 (with one note added), Gmaj13 (with one note added), GmMaj9 (with one note moved), Gadd9 (with one note taken away) or G69 (with one note moved).

In which keys. Every note of Gmaj9 belongs to D major (the IV), E minor (the ♭III), G major (the I) and B minor (the ♭VI).

The common shapes, written lowest string first: 300002, 324232, 354435, xx4435, xx5475, 755775, x-10-7-7-7-7, x-10-9-11-10-x, 10-10-9-11-10-x, x-12-12-12-12-14, x-x-12-14-12-14, 15-12-12-12-12-14.

Under the hand. 1 of the 12 shapes here sits in open position, and the first uses 4 open strings. 6 of the 12 need a barre. Together they cover the neck from the 2nd fret to the 15th.

Shell. Root, third and seventh: the guide tones fix the quality, so the fifth is dropped. That is what leaves a string free, so pick a tension to put on top. Gmaj9 has 3242xx, x-10-9-11-10-x, xx5475.

Drop 2. A close-position chord with the second voice from the top lowered an octave. Sits on four adjacent strings. Gmaj9 has 3242xx, xx4203, x0400x, x-10-9-11-10-x, xx5475, 7-10-7-11-x-x, x-x-7-11-8-7, x2527x.

Drop 3. The third voice from the top lowered an octave. The dropped voice becomes the bass, which is why a string is skipped. Gmaj9 has x0x002, 3x420x, 5x547x, x-10-x-11-10-7, 7-x-7-11-8-x, x-12-x-12-12-14, x2x273, x9x485.

Rootless. The root left to the bass player. Frees a finger for a tension. Gmaj9 has x2423x, xx0202, xx4435, xx7777, x-x-9-11-10-10, x-12-12-11-12-x, x-x-12-14-12-14, x2x232.

Open string. An open string left ringing against a fretted grip. Because it costs no finger, it sounds a note the closed shape has none left for -- a tension on top, or a pedal root underneath. Either a familiar grip with open strings added, or a shape so sparse the open strings carry the chord. These belong to their key rather than to a shape, so D, A, G and E have many and Eb a handful. Gmaj9 has 324200, x24230, x57470, 5x5470, 200000, x04000.

Tensions. A shell of Gmaj9, root, third and seventh, leaves a string free, and the tones that belong over it are the #11 (C#) and the 13 (E).

What kind of chord this is. Gmaj9 is a major chord — root, major third, fifth. major chords on every root, and what they are for.

The common shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.