An open string left ringing against a fretted grip. Because it costs no finger, it sounds a note the closed shape has none left for -- a tension on top, or a pedal root underneath. Either a familiar grip with open strings added, or a shape so sparse the open strings carry the chord. These belong to their key rather than to a shape, so D, A, G and E have many and Eb a handful.
F13 is F, A, C, Eb, G and D — F9 with the thirteenth added on top.
It sounds big and open. Six notes will not fit under four fingers: the fifth goes first, then the ninth, and the third, flat seventh and thirteenth stay.

| F | A | C | Eb | G | D |
|---|---|---|---|---|---|
| 1 | 3 | 5 | ♭7 | 9 | 13 |
Dominant — the full V chord.
Also written Fdom13 or F dominant 13. The same chord either way; which spelling you meet depends on who wrote the chart.
An open string left ringing against a fretted grip. It costs no finger, so it can sound a note the closed shape has none left for: a tension on top, or a pedal root underneath.
These belong to their key rather than to a shape: they cannot be moved up the neck. D, A, G and E have many; E♭ has a handful.
F13 has 5 of them, on strings 6-5-4-3-2, strings 5-4-3-2-1, the middle four strings, the top four strings and strings 6-4-3-2, from the 4th fret up to the 5th — every inversion the chord has: A in the bass and D in the bass. The one to learn first is the A shape at the 4th fret, which is the easiest grip here.
Start with x-8-7-8-10-10 — no barre. None of the shapes for F13 uses an open string, so every one of them is movable; the lowest sits at the 1st fret. 6 of the 7 need a barre. Together they cover the neck from the 1st fret to the 15th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| 111233 | 1st fret | F, root position | G | barred |
| x-8-7-8-10-10 | 7th fret | F, root position | D | all fretted |
| x-8-7-8-8-10 | 7th fret | F, root position | D | barred |
| 8-8-8-8-10-10 | 8th fret | C, 2nd inversion | D | barred |
| 13-10-12-10-10-11 | 10th fret | F, root position | Eb | barred |
| 13-12-12-12-13-11 | 11th fret | F, root position | Eb | barred |
| 13-13-13-14-15-15 | 13th fret | F, root position | G | barred |
The same notes rebuilt from scratch give 3 shell, 13 drop 2, 9 drop 3 and 25 rootless voicings, each on its own page.
Tensions. A shell of F13, root, third and seventh, leaves a string free, and the tones that belong over it are the #11 (B).
F13 is the V of Bb, and that is where it goes if it goes anywhere: the third and the flat seventh are a tritone apart, and both resolve by a semitone into Bb.
Voice by voice, F13 → Bb. 2 voices move by a semitone, and 2 notes are common to both chords.
| In F13 | Moves | In Bb |
|---|---|---|
| F, the root | stays where it is | F, the fifth |
| A, the major third | rises a semitone | Bb, the root |
| C, the fifth | falls a whole tone | Bb, the root |
| Eb, the flat seventh | falls a semitone | D, the major third |
| G, the ninth | falls a whole tone | F, the fifth |
| D, the thirteenth | stays where it is | D, the major third |
In which keys. Every note of F13 belongs to G minor (the ♭VII) and Bb major (the V, the dominant).
Every note of F13 is in F mixolydian and F lydian dominant.
Change one note of F13 and you have Fmaj13 (the flat seventh becomes a major seventh), F69 (drop the flat seventh), F9 (drop the sixth) or F9#11 (the sixth becomes a flat fifth).
F13 is a dominant chord — root, major third, fifth, minor seventh. Dominant seventh chords on every root.
On F13’s sound and use this page follows Ted Pease & Ken Pullig, Modern Jazz Voicings (Berklee Press, 2001). The shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.