Abm9

General info

Full name

Ab Minor 9

Symbol

Abm9

Root

Ab

Quality

Minor 9

Chord notes

Functions & resolutions

Typical function in key

VDominant (V)C# major

Stability / tension

Stable — can serve as minor tonic

Most common resolutions

EbEb MajorDbmDb MinorGbGb Major

Unstable degrees

4Db

b7Gb

resolves down to the resolution tonic

Main resolution

Abm9source

EbEb Major

Minor chord Abm is a stable tonic in the minor key of the same root. Typical motion leads to the subdominant (iv) or dominant (V).

Other resolutions

Abm9source

Deceptive resolution

EE Major

A minor chord can unexpectedly move to the major chord on the bVI degree — a deceptive-resolution effect.

Abm9source

Modal resolution

GbGb Major

In Dorian and Aeolian modes, the minor chord is the tonic. Typical modal motion: i → bVII or i → iv.

Abm9source

Jazz reharmonization

Db7Db Dominant 7

In jazz, a minor chord often serves as ii in a ii-V-I progression. Its "resolution" is the dominant a 4th up.

Abm9source

Functional resolution

DbDb Major

As the vi degree in major, a minor chord can move to IV or ii, creating subdominant motion.

Features

Character

Minor, with a minor 7th and 9th

Characteristic interval

Minor third (m3), 9th

Description

The minor 3rd and minor 7th form m7, while the major 9th adds a diatonic extension. The chord is denser than m7 but retains minor quality.

Application

• ii9 in major
• Minor tonic in jazz
• Neo-soul and R&B

Voicing & structure

Harmony

Compatible scales

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