Abmaj13

General info

Full name

Ab Major 13

Symbol

Abmaj13

Root

Ab

Quality

Major 13

Chord notes

Functions & resolutions

Typical function in key

IVSubdominant (IV)Eb major

Stability / tension

Stable — can serve as major tonic

Most common resolutions

DbDb MajorEbEb MajorFmF Minor

Unstable degrees

7G

1Ab

resolves up to the root

Main resolution

Abmaj13source

EbEb Major

Major chord Ab is a stable tonic. As tonic it doesn't require resolution, but in a progression context typically moves to IV or V.

Other resolutions

Abmaj13source

Deceptive resolution

FmF Minor

As the V degree, a major chord can defy expectations by moving to vi instead of I (deceptive cadence).

Abmaj13source

Modal resolution

GbGb Major

In modal context, a major chord can freely move to bVII, bIII, or bVI — characteristic of Mixolydian mode.

Abmaj13source

Jazz reharmonization

Abmaj7Ab Major 7

In jazz, a major chord is enriched to maj7, 6/9, or add9 and can smoothly transition into a ii-V of another key (modulation).

Abmaj13source

Functional resolution

EbEb Major

As the IV degree (subdominant), a major chord can resolve to V or directly to I (plagal cadence).

Features

Character

Major, with major 7th and 13th

Characteristic interval

Major 7th (M7), 13th

Description

The major 7th and 13th extend the major triad into a seven-note harmonic structure.

Application

• Final jazz cadences
• Orchestral arrangements
• Modern pop and neo-soul

Voicing & structure

Harmony

Compatible scales

All chord tones are contained in these scales — use them for improvisation.