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

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  1. Chords
  2. /
  3. C
  4. /
  5. Sus4

C suspended 4th (Csus4)

CRoot
FPerf 4
GPerf 5

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

Notes
CFG
Formula
1 · 4 · 5
Type
Suspended 4th triad
03

How to play it

EADGBe341112345

Csus4

C suspended 4th, Open

Bass
C, the root
Root
C
Strings
A D G B e · open
  • CRoot
  • FP4
  • GP5

Up the neck

6 voicings, same three notes

Why it sounds suspended 4th

C+5 fretsF+2 fretsG

Stacked from 2 intervals. Compare with Csus2 →

04

Where to go next

More C chords

Same root, other colours

Cmaj7C7Cadd9C6Csus2Cmaj9C6/9

Chords in the key of C

What Csus4 usually sits next to

I · Cii · Dmiii · EmIV · FV · Gvi · Amvii° · B°

Close relatives

Relatives of C major

  • AmRelative minor of C major
  • CmParallel minor, lower the 3rd

Other Sus4 chords

Same quality, every root

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

Root

C
02

Quality

Sus4

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

Alterations need a 7th chord. Try C7 →

Why it sounds suspended 4th

C+5 fretsF+2 fretsG

Stacked from 2 intervals. Compare with Csus2 →

03

How to play it

EADGBe341112345

Csus4

C suspended 4th, Open

Bass
C, the root
Root
C
Strings
A D G B e · open
  • CRoot
  • FP4
  • GP5

Up the neck

6 voicings, same three notes
04

Where to go next

More C chords

Same root, other colours

Cmaj7C7Cadd9C6Csus2Cmaj9C6/9

Chords in the key of C

What Csus4 usually sits next to

I · Cii · Dmiii · EmIV · FV · Gvi · Amvii° · B°

Close relatives

Relatives of C major

  • AmRelative minor of C major
  • CmParallel minor, lower the 3rd

Other Sus4 chords

Same quality, every root

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