Gb7 Dominant-Septakkord Akkord

The Gb Dominant-Septakkord chord contains: F#, A#, C#, E.

These notes are derived by applying the dominant 7th interval formula (0–4–7–10 semitones) to the root note F#.

A major triad with a minor seventh.

Creates harmonic tension that resolves to the tonic. The Gb7 chord is used across pop, rock, jazz, and classical music. As the I chord in the key of F# major, it functions as the most stable resting point in progressions.

On piano, play F#, A#, C#, E simultaneously.

In root position, F# is the lowest note. Inversions move the bass note up — first inversion has A# lowest, second inversion has C# lowest.

A dominant 7th chord has 4 notes: F#, A#, C#, E (in F#).

It is a 7th chord, extending beyond the basic triad.

The F# major chord (F#–A#–C#) uses a major third (4 semitones), giving it a bright, happy sound.

The F# minor chord (F#–A–C#) uses a minor third (3 semitones), giving it a darker, emotional sound.

Gb7 naturally serves as the I chord in the key of F# major.

It also appears as IV in the key of C# major, and as V in the key of B major.

Yes.

The ukulele uses GCEA tuning with 4 strings. The Gb7 chord notes (F#, A#, C#, E) can be fretted on a ukulele, though the shapes differ from guitar due to the 4-string layout and shorter scale.

In the key of F# major, Gb7 pairs naturally with B major (IV), C# major (V), and D#m (vi).

The classic I–IV–V (Gb7–B–C#) is the foundation of blues, country, and rock.

An inversion places a non-root note in the bass.

Gb7 root position: F# in bass. First inversion: A# in bass. Second inversion: C# in bass. Inversions create smoother bass line movement without changing the harmony.

Remember the formula: 0–4–7–10 semitones from root.

For Gb7: start on F#, add 4 semitones, then 7 semitones, then 10 semitones. Practicing this across all 12 roots builds instant recognition of any dominant 7th chord.