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G♭ Dominant 13th

Also Known As
What are Enharmonics?G♭ / F♯ Equivalent

Hear the G♭ Dominant 13th chord played for you.

G♭13
G♭ – B♭ – D♭ – E – A♭ – B – E♭
Formula:R-M3-P5-m7-M9-P11-M13
Intervals:P1-M3-P5-m7-M9-P11-M13
Scale Degrees:1-3-5-b7-9-11-13

Introduction

G♭ Dominant 13th on the piano — Notes: G♭ – B♭ – D♭ – E – A♭ – B – E♭
G♭ Dominant 13th chord on the piano

The G♭ Dominant 13th chord is a seven-note chord made up of G♭, B♭, D♭, E, A♭, B, and E♭. It is built from a root, major third, perfect fifth, minor seventh, major ninth, perfect eleventh, and major thirteenth.

The Gb Dominant 13th piano chord (Gb13) consists of the notes Gb, Bb, Db, E, Ab, B, Eb. Formula: R-M3-P5-m7-M9-P11-M13 | Scale degrees: 1-3-5-b7-9-11-13.

Notes

Notes:G♭ – B♭ – D♭ – E – A♭ – B – E♭

Key Signature

The key of Gb Dominant 13th has 6 flats.

B♭E♭A♭D♭G♭C♭

Order of flats

Flats are added in a fixed order — the reverse of the sharp order. Each new flat key adds the next flat on the list.

BEADGCF

Mnemonic: Battle Ends And Down Goes Charles’ Father

Chords in the Key of G♭ Major

These are the diatonic triads built on each degree of the G♭ major scale:

C
D
E
F
G
A
B
C
D
E
F
G
A
B
IG♭ Major (major)
DegreeNumeralChordQuality
1IG♭ MajorMajor
2iiA♭ MinorMinor
3iiiB♭ MinorMinor
4IVB MajorMajor
5VD♭ MajorMajor
6viE♭ MinorMinor
7vii°F DiminishedDiminished

Theory: Intervals

Formula: R-M3-P5-m7-M9-P11-M13
Intervals: P1-M3-P5-m7-M9-P11-M13

The G♭ Dominant 13th is built by stacking intervals from the root note. The formula R-M3-P5-m7-M9-P11-M13 describes the scale degrees used. The intervals P1-M3-P5-m7-M9-P11-M13 show the distance between each note in the chord.

G♭ Dominant 13th — Frequently Asked Questions

What notes are in the Gb Dominant 13th chord?
The Gb Dominant 13th chord (Gb13) contains 7 notes: Gb, Bb, Db, E, Ab, B, Eb. Formula: R-M3-P5-m7-M9-P11-M13.
How is Gb13 used in music?
Gb13 is used in jazz, fusion, and contemporary music to add harmonic color. It appears as a dominant or tonic chord depending on context.
What is the scale degree formula for Gb13?
Gb13 uses scale degrees 1-3-5-b7-9-11-13, giving it its distinctive sound.

Practice Tips

  • Start by placing your thumb on Gb and spacing remaining fingers across the chord.
  • Practice Gb13 slowly with separate hands before combining.
  • Listen carefully to the tension created by the altered tones in this chord.
  • Try voicing Gb13 in different octaves to find the most comfortable position.
  • Resolve Gb13 to a nearby chord to hear its function in context.

Related Tools

Chord FinderLook up any chord — see the notes, hear it, and play along.Chord DrillTimed drills to build speed and recognition across all chord types.Practice RoomPlug in a MIDI keyboard and get real-time feedback on every chord and scale.Circle of FifthsVisualize key relationships, relative minors, and key signatures.MIDI MonitorLive MIDI message stream with note names, velocity, and a scrolling staff.