Gb7sus2

General info

Full name

Gb 7sus2

Symbol

Gb7sus2

Root

Gb

Quality

7sus2

Chord notes

Functions & resolutions

Typical function in key

IVSubdominant (IV)C# major

Stability / tension

Stable — can serve as major tonic

Most common resolutions

BB MajorDbDb MajorEbmEb Minor

Unstable degrees

4B

b7E

resolves down to the resolution tonic

Main resolution

Gb7sus2source

DbDb Major

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

Other resolutions

Gb7sus2source

Deceptive resolution

EbmEb Minor

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

Gb7sus2source

Modal resolution

EE Major

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

Gb7sus2source

Jazz reharmonization

Gbmaj7Gb 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).

Gb7sus2source

Functional resolution

DbDb Major

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

Features

Character

Dominant, with a 2nd instead of the 3rd

Characteristic interval

2nd instead of 3rd (2), Minor 7th (b7)

Description

The 2nd replaces the 3rd, withholding major quality, while the minor 7th preserves dominant colour. The 2nd may rise to the 3rd of a dominant seventh chord.

Application

• 2–3 suspension over dominant
• Modal harmony
• Funk and modern jazz

Voicing & structure

Harmony

Compatible scales

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