My Guitar Notes 中文

Db11 — Db dominant eleventh chord

A dominant ninth chord with the eleventh added. The eleventh is a semitone below the major third in the octave above it, and the two notes clash, so the third is normally omitted in performance and the chord is written 9sus4 or 11.

Symbol
Db11
Root
Db
Quality
Dominant eleventh
Family
extended
Notes
Db Eb F Gb Ab Cb
Degree formula
1 9 3 11 5 b7
Semitones from the root
0 2 4 5 7 10
Distinct pitch classes
6
Interval structure
Stacked from the root: 2 semitones, 2 semitones, 1 semitones, 2 semitones, 3 semitones
Notation
Written 11. In practice voiced without the third, which makes the same sound as a dominant ninth with a suspended fourth.
Key
Db · Db major / Bb minor key signature

Formula

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

DegreeNoteSemitonesInterval from the root
1Db0Perfect unison
9Eb2Major second
3F4Major third
11Gb5Perfect fourth
5Ab7Perfect fifth
b7Cb10Minor 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 positionDb1Db – Eb – F – Gb – Ab – Cb0 2 4 5 7 10
first inversionEb9Eb – F – Gb – Ab – Cb – Db0 2 3 5 8 10
second inversionF3F – Gb – Ab – Cb – Db – Eb0 1 3 6 8 10
third inversionGb11Gb – Ab – Cb – Db – Eb – F0 2 5 7 9 11
fourth inversionAb5Ab – Cb – Db – Eb – F – Gb0 3 5 7 9 10
fifth inversionCbb7Cb – Db – Eb – F – Gb – Ab0 2 4 6 7 9

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
19-9-9-10-9-11Db Gb B F Ab Eb1 11 b7 3 5 9Db26
29-8-6-8-7-7Db F Ab Eb Gb B1 3 5 9 11 b7Db36
39-9-6-8-6-7Db Gb Ab Eb F B1 11 5 9 3 b7Db36
49-8-9-11-9-11Db F B Gb Ab Eb1 3 b7 11 5 9Db36
59-6-6-10-7-7Db Eb Ab F Gb B1 9 5 3 11 b7Db46
69-11-9-10-7-11Db Ab B F Gb Eb1 5 b7 3 11 9Db46

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

Related