A♭ Dominant 13th
A♭13
Notes
A♭ · C · E♭ · G♭ · B♭ · F
Intervals
- RootA♭ (1P)
- Major 3rdC (3M)
- Perfect 5thE♭ (5P)
- Minor 7thG♭ (7m)
- Major 9thB♭ (9M)
- Major 13thF (13M)
Fretboard
Adjust labels, frets, and palette in the interactive view.
About
The A♭13 dominant thirteenth (A♭–C–E♭–G♭–B♭–F) is the fullest expression of dominant harmony. The F (a major sixth above the root) adds warmth and sophistication while the chord’s dominant function — driven by the tritone between 3 and ♭7 — remains intact, still pulling toward D♭. On guitar, full voicings are impractical; the essential tones are the 3rd, ♭7, and 13th. The 5th, 9th, and sometimes even the root can all be omitted in favor of these three. Common in jazz and funk comping. Compared to A♭9, the 13 adds a richer, more colorful top end without altering the harmonic direction.
Similar chords
Chords sharing two or more notes with this one, ranked by overlap.
Scales containing this chord
- A♭ Mixolydian (I)
- B♭ Natural Minor (VII)
- C Locrian (VI)
- D♭ Major (V)
- E♭ Dorian (IV)
- E♭ Melodic Minor (IV)
- F Phrygian (III)
- F♯ Lydian (II)
Scales whose notes include every chord tone. The Roman numeral (or scale degree) marks the chord root’s position in the scale.