Abmaj13 guitar chord
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.
- Tap a note to hear it
- Arrows change position
- Fingers, notes or intervals
- Play the chord
About Abmaj13 — shell voicings
Abmaj13 is Ab, C, Eb, G, Bb and F — Abmaj9 with the thirteenth on top, and the eleventh left out.
It sounds full and wide open. Six notes into four fingers means something goes: keep the third, the seventh and the thirteenth.
Abmaj13 notes and formula
| Ab | C | Eb | G | Bb | F |
|---|---|---|---|---|---|
| 1 | 3 | 5 | 7 | 9 | 13 |
Tonic — the major sound with most of the scale showing.
Also written AbM13, AbΔ13 or Ab major 13. The same chord either way; which spelling you meet depends on who wrote the chart.
How to play Abmaj13
Root, third and seventh. The third and seventh, the guide tones, are what make the chord major, minor or dominant, so the fifth can go: it says nothing the symbol needs.
Three notes means a spare string, which is the real point. Put a tension on it.
Abmaj13 has 2 of them, on strings 6-4-3-2 and strings 5-3-2-1, from the 4th fret up to the 11th — all in one inversion, so the bass note never moves. The one to learn first is the Ab shape at the 4th fret.
Start with x-11-10-10-8-8 — no barre. None of the shapes for Abmaj13 uses an open string, so every one of them is movable; the lowest sits at the 3rd fret. 4 of the 6 need a barre. Together they cover the neck from the 3rd fret to the 13th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| 433343 | 3rd fret | Ab, root position | G | barred |
| 445564 | 4th fret | Ab, root position | Ab | barred |
| x86688 | 6th fret | F, 13th in the bass | C | barred |
| x-11-10-10-8-8 | 8th fret | Ab, root position | C | all fretted |
| x-11-8-10-8-8 | 8th fret | Ab, root position | C | barred |
| x-11-11-12-13-13 | 11th fret | Ab, root position | F | all fretted |
The same notes rebuilt from scratch give 14 drop 2, 9 drop 3 and 27 rootless voicings, each on its own page.
Tensions. A shell of Abmaj13, root, third and seventh, leaves a string free, and the tones that belong over it are the #11 (D).
How to use Abmaj13
How you get to it. The turn that lands on Abmaj13 is Bbm7 to Eb7 — the ii and the V of Ab — and Eb7 shares its third and seventh with Bbm7, so the hand barely moves between them.
In which keys. Every note of Abmaj13 belongs to C minor (the ♭VI), Eb major (the IV, the subdominant), F minor (the ♭III) and Ab major (the I, the tonic).
What to play over Abmaj13
Every note of Abmaj13 is in Ab major and Ab lydian.
Chords near Abmaj13
Change one note of Abmaj13 and you have Abmaj9 (drop the sixth), Abmaj11 (the sixth becomes a fourth), Ab69 (drop the major seventh) or Ab13 (the major seventh becomes a flat seventh).
Abmaj13 is a major chord — root, major third, fifth. Major chords on every root.
On Abmaj13’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.