Skip to content

Guitar chords · Dominant 13th

B♭13 chord on guitar (Bb13)

B♭13 (B♭ 13th) has six notes: B♭, D, F, A♭, C and G, the , 3, 5, ♭7, 9 and 13.

Shapes

How to play B♭13

Strum a shape to hear it, or pick it one string at a time. R marks the ; the other numbers are the chord tones.

B♭13 has no common . Play it as the A shape at 1 or the E shape at fret 6. A keeps its fingering anywhere on the neck: slide it up or down and the , on the lowest played string, names the chord.

  • A shape · fret 1

    ××R♭7313B♭A♭DG
  • E shape · fret 6

    6fr××R♭7313B♭A♭DG
Name a shape you're holding: the chord finder

Notes and formula

What makes B♭13 dominant 13th

A 13th chord stacks the 13th (the 6th, an up) on a chord. Guitarists play the , 3rd, ♭7th and 13th: the 5th and 9th are optional, and the 11th is left out because it clashes with the 3rd. It is a rich dominant heard in jazz, blues and funk.

  • 1Root: the note the chord is named after. Keep it.
  • 3Essential: makes the chord what it is. Never drop it.
  • 5Optional: drop it first when you run out of fingers.
  • 11Left out: players skip it because it clashes.

The 3rd, the ♭7th and the 13th make B♭13 a 13th chord; you can leave out the 5th and the 9th. The 11th is left out: it clashes with the 3rd.

  1. B♭Rroot
  2. D3essential
  3. F5optional
  4. A♭♭7essential
  5. C9optional
  6. G13essential
EADGBE0135791215B♭B♭B♭B♭B♭B♭B♭B♭FGA♭CDFGCDFGA♭CDFGA♭CDFGA♭CDFGA♭CDFGA♭CDFGA♭CDFG
  • B♭, the root
  • Other chord tones

B♭13 usually resolves to E♭ or E♭m, the chord a 5th below: the V13–I move.

B♭13 and A♯13 are the same chord with two names: same , same sound. Which one you see depends on the key the song is written in.

Keys

Keys with B♭13

B♭13 belongs to two keys: E♭ major (V13) and C minor (VII13).

Numerals follow the key's own scale, so III, VI and VII in a minor key are its own major chords. A ♭ or ♯ in front marks a chord from outside the key. How Roman numerals work

Slash chords

B♭13 over another bass note

A keeps B♭13 on top and puts another note in the bass: the letter after the slash is the lowest note you play.

  • B♭13/D

    B♭13 with its 3rd, D, in the bass.

  • B♭13/F

    B♭13 with its 5th, F, in the bass.

  • B♭13/A♭

    B♭13 with its ♭7th, A♭, in the bass.

Questions

B♭13, in short

What notes are in the B♭13 chord?
B♭13 (B♭ 13th) has six notes: B♭, D, F, A♭, C and G, the , 3, 5, ♭7, 9 and 13.
How do you play B♭13 on guitar?
B♭13 has no common . Play it as the A shape at 1 or the E shape at fret 6.
What key is B♭13 in?
B♭13 belongs to two keys: E♭ major (V13) and C minor (VII13).
Is B♭13 the same as A♯13?
Yes: same frets, same sound, different name. B♭13 is the spelling in E♭ major and C minor. No key on the circle spells it A♯13, so you will rarely see that name.
All guitar chords