My Guitar Notes

D13 — D dominant thirteenth chord

A dominant seventh chord with the ninth and the thirteenth added. The eleventh is left out because it clashes with the third; with the eleventh included the chord has seven distinct notes.

Symbol
D13
Root
D
Quality
Dominant thirteenth
Family
extended
Notes
D E F# A B C
Degree formula
1 9 3 5 13 b7
Semitones from the root
0 2 4 7 9 10
Distinct pitch classes
6
Interval structure
Stacked from the root: 2 semitones, 2 semitones, 3 semitones, 2 semitones, 1 semitones
Notation
Written 13. Common as a final chord in blues, and as a dominant with colour in jazz.
Key
D · D major / B minor key signature

Formula

The chord tones in order from the root, with the interval each one forms above it.

DegreeNoteSemitonesInterval from the root
1D0Perfect unison
9E2Major second
3F#4Major third
5A7Perfect fifth
13B9Major sixth
b7C10Minor seventh

Inversions

An inversion is the same set of notes with a different one in the bass. The last column gives the distance of each note above the bass note, in semitones.

InversionBass noteDegree in the bassNotes above the bassSemitones above the bass
root positionD1D – E – F# – A – B – C0 2 4 7 9 10
first inversionE9E – F# – A – B – C – D0 2 5 7 8 10
second inversionF#3F# – A – B – C – D – E0 3 5 6 8 10
third inversionA5A – B – C – D – E – F#0 2 3 5 7 9
fourth inversionB13B – C – D – E – F# – A0 1 3 5 7 10
fifth inversionCb7C – D – E – F# – A – B0 2 4 6 9 11

Playable voicings

These shapes were found by searching the fretboard of a standard-tuned guitar (E A D G B E) rather than copied from a chord book. The search allows every string to sound or to be muted, rejects any shape with a muted string between two sounding strings, rejects any shape whose fretted notes span more than four frets (a five-fret window), requires every chord tone to be present, and then sorts what remains with root-position shapes first and the most compact, lowest shapes next. The shapes shown are the first six of that ordering; other orderings are possible at the same frets.

#Shape (low string first)NotesDegreesBassSpan (frets)Sounding strings
110-9-9-9-10-8D F# B E A C1 3 13 9 5 b7D26
210-12-10-11-12-12D A C F# B E1 5 b7 3 13 9D26
310-9-10-9-10-7D F# C E A B1 3 b7 9 5 13D36
410-7-9-11-10-8D E B F# A C1 9 13 3 5 b7D46
510-7-10-11-10-7D E C F# A B1 9 b7 3 5 13D46
610-12-9-11-13-12D A B F# C E1 5 13 3 b7 9D46

Shape numbers run from the lowest string to the highest, so the left-hand number is the sixth string (low E) in standard tuning. Multiple shapes are listed because a chord can be voiced several ways, and because a lower position is not always the better sounding one.

Related chords and scales

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