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An interactive reference for guitar chord shapes, voicings and the theory behind them.

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  1. Chords
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  3. B♭
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  5. Sus4

B♭ suspended 4th (B♭sus4)

B♭Root
E♭Perf 4
FPerf 5

Anticipatory and unresolved. Replaces the 3rd with a 4th. Common in rock and pop as a transition chord.

Notes
B♭E♭F
Formula
1 · 4 · 5
Type
Suspended 4th triad
03

How to play it

EADGBe1234112345

B♭sus4

B♭ suspended 4th, 1fr

Bass
B♭, the root
Root
B♭
Strings
A D G B e · 1st fret
  • B♭Root
  • E♭P4
  • FP5

Up the neck

6 voicings, same three notes

Why it sounds suspended 4th

B♭+5 fretsE♭+2 fretsF

Stacked from 2 intervals. Compare with B♭sus2 →

04

Where to go next

More B♭ chords

Same root, other colours

B♭maj7B♭7B♭add9B♭6B♭sus2B♭maj9B♭6/9

Chords in the key of B♭

What B♭sus4 usually sits next to

I · B♭ii · Cmiii · DmIV · E♭V · Fvi · Gmvii° · A°

Close relatives

Relatives of B♭ major

  • GmRelative minor of B♭ major
  • B♭mParallel minor, lower the 3rd

Other Sus4 chords

Same quality, every root

Csus4C♯sus4Dsus4E♭sus4Esus4Fsus4F♯sus4Gsus4A♭sus4Asus4B♭sus4Bsus4
01

Root

B♭
02

Quality

Sus4

3 notes: root, 3rd, 5th. Every other chord is built on one of these.

Alterations need a 7th chord. Try B♭7 →

Why it sounds suspended 4th

B♭+5 fretsE♭+2 fretsF

Stacked from 2 intervals. Compare with B♭sus2 →

03

How to play it

EADGBe1234112345

B♭sus4

B♭ suspended 4th, 1fr

Bass
B♭, the root
Root
B♭
Strings
A D G B e · 1st fret
  • B♭Root
  • E♭P4
  • FP5

Up the neck

6 voicings, same three notes
04

Where to go next

More B♭ chords

Same root, other colours

B♭maj7B♭7B♭add9B♭6B♭sus2B♭maj9B♭6/9

Chords in the key of B♭

What B♭sus4 usually sits next to

I · B♭ii · Cmiii · DmIV · E♭V · Fvi · Gmvii° · A°

Close relatives

Relatives of B♭ major

  • GmRelative minor of B♭ major
  • B♭mParallel minor, lower the 3rd

Other Sus4 chords

Same quality, every root

Csus4C♯sus4Dsus4E♭sus4Esus4Fsus4F♯sus4Gsus4A♭sus4Asus4B♭sus4Bsus4
B♭ suspended 4th