Bb11 — Bb 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.

1 = Bb
9 = C
3 = D
11 = Eb
5 = F
b7 = Ab

Symbol: Bb11
Root: Bb
Quality: Dominant eleventh
Family: extended
Notes: Bb C D Eb F Ab
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: Bb · Bb major / G minor key signature

Formula

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

Degree	Note	Semitones	Interval from the root
1	Bb	0	Perfect unison
9	C	2	Major second
3	D	4	Major third
11	Eb	5	Perfect fourth
5	F	7	Perfect fifth
b7	Ab	10	Minor 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.

Inversion	Bass note	Degree in the bass	Notes above the bass	Semitones above the bass
root position	Bb	1	Bb – C – D – Eb – F – Ab	0 2 4 5 7 10
first inversion	C	9	C – D – Eb – F – Ab – Bb	0 2 3 5 8 10
second inversion	D	3	D – Eb – F – Ab – Bb – C	0 1 3 6 8 10
third inversion	Eb	11	Eb – F – Ab – Bb – C – D	0 2 5 7 9 11
fourth inversion	F	5	F – Ab – Bb – C – D – Eb	0 3 5 7 9 10
fifth inversion	Ab	b7	Ab – Bb – C – D – Eb – F	0 2 4 6 7 9

Inversion

Bass note

Degree in the bass

Notes above the bass

Semitones above the bass

root position

Bb – C – D – Eb – F – Ab

0 2 4 5 7 10

first inversion

C – D – Eb – F – Ab – Bb

0 2 3 5 8 10

second inversion

D – Eb – F – Ab – Bb – C

0 1 3 6 8 10

third inversion

Eb – F – Ab – Bb – C – D

0 2 5 7 9 11

fourth inversion

F – Ab – Bb – C – D – Eb

0 3 5 7 9 10

fifth inversion

Ab – Bb – C – D – Eb – F

0 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)	Notes	Degrees	Bass	Span (frets)	Sounding strings
1	6-6-6-7-6-8 (6→1)	Bb Eb Ab D F C	1 11 b7 3 5 9	Bb	2	6
2	6-5-3-5-4-4 (6→1)	Bb D F C Eb Ab	1 3 5 9 11 b7	Bb	3	6
3	6-6-3-5-3-4 (6→1)	Bb Eb F C D Ab	1 11 5 9 3 b7	Bb	3	6
4	6-5-6-8-6-8 (6→1)	Bb D Ab Eb F C	1 3 b7 11 5 9	Bb	3	6
5	6-3-3-7-4-4 (6→1)	Bb C F D Eb Ab	1 9 5 3 11 b7	Bb	4	6
6	6-8-6-7-4-8 (6→1)	Bb F Ab D Eb C	1 5 b7 3 11 9	Bb	4	6

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

KeyEverything in Bbscale, chords and neck map for this root
ScaleBb mixolydianthe scale this chord comes from
ChordBb9the ninth chord without the eleventh
ChordBb7the basic dominant

Everything in Bb · All chords

KeyKey of BbBb C D Eb F G A · Bb major / G minor
ScaleBb mixolydian7 notes · 1 2 3 4 5 6 b7
ChordBb9 — Dominant ninth1 9 3 5 b7 · Bb C D F Ab
ChordBb7 — Dominant seventh1 3 5 b7 · Bb D F Ab
ChordBb13 — Dominant thirteenth1 9 3 5 13 b7 · Bb C D F G Ab
ChordBbm11 — Minor eleventh1 9 b3 11 5 b7 · Bb C Db Eb F Ab
ChordBbm9 — Minor ninth1 9 b3 5 b7 · Bb C Db F Ab
DegreesBb — degree mapBb major and natural minor · frets 0–22

Everything in this key: Bb · Chords · Theory Atlas