The root left to the bass player. Frees a finger for a tension.
AbmMaj11 is Ab, Cb, Eb, G, Bb and Db — AbmMaj9 with the eleventh added on top.
It sounds dense and unresolved. Something is always omitted; the ♭3 and the natural 7 are what must not be.

| Ab | Cb | Eb | G | Bb | Db |
|---|---|---|---|---|---|
| 1 | ♭3 | 5 | 7 | 9 | 11 |
Minor tonic — the melodic minor as far up as a guitar carries it.
Also written AbmM11 or Abm(maj11). The same chord either way; which spelling you meet depends on who wrote the chart.
Leave the root to the bass player. In a band nobody misses it, and the ear supplies it from the guide tones anyway.
The finger it frees goes to a tension, which is why these sound richer than the shape they came from rather than thinner.
AbmMaj11 has 24 of them, on the middle four strings, the top four strings and strings 5-3-2-1, from open position up to the 12th — every inversion the chord has: Cb in the bass, Eb in the bass, G in the bass, Bb in the bass and Db in the bass. The one to learn first is the Cb shape at the nut, which is the easiest grip here.
8 of them sit on the middle four strings, so you can run the inversions up one set without changing strings — which is the whole reason to learn them as a family rather than as separate grips.
Start with xx6687 — no barre. None of the shapes for AbmMaj11 uses an open string, so every one of them is movable; the lowest sits at the 4th fret. 4 of the 6 need a barre. Together they cover the neck from the 4th fret to the 13th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| 445446 | 4th fret | Ab, root position | Bb | barred |
| xx6687 | 6th fret | Ab, root position | Cb | all fretted |
| x66687 | 6th fret | Eb, 2nd inversion | Cb | barred |
| x-11-9-12-11-9 | 9th fret | Ab, root position | Db | all fretted |
| x-11-11-12-12-11 | 11th fret | Ab, root position | Eb | barred |
| x-11-11-13-13-11 | 11th fret | Ab, root position | Eb | barred |
The same notes rebuilt from scratch give 5 shell, 12 drop 2, 9 drop 3 and 1 open string voicings, each on its own page.
Tensions. A shell of AbmMaj11, root, third and seventh, leaves a string free, and the tones that belong over it are the 13 (F).
How you get to it. The turn that lands on AbmMaj11 is Bbm7♭5 to Eb7♭9: the ii and the V of Ab minor, which is where a minor tonic is usually arrived at rather than simply begun on.
Every note of AbmMaj11 is in Ab harmonic minor and Ab melodic minor.
Change one note of AbmMaj11 and you have Abmaj11 (the minor third becomes a major third), Abm11 (the major seventh becomes a flat seventh) or AbmMaj9 (drop the fourth).
AbmMaj11 is a minor chord — root, minor third, fifth. Minor chords on every root.
On AbmMaj11’s sound and use this page follows Ted Pease & Ken Pullig, Modern Jazz Voicings (Berklee Press, 2001). The shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.