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Csus2 chord (C suspended second) on piano

Csus2 (C suspended second) has three notes: C, D and G. Its formula is 1, 2, 5. In major keys, Csus2 is the Isus2 chord in C major, the IIsus2 in Bb major, the IVsus2 in G major, the Vsus2 in F major and the VIsus2 in Eb major.

Csus2 inversions and fingering

CDG
Root position
C D G · RH 1-2-5 · LH 5-3-1
DGC
First inversion
D G C · RH 1-2-5 · LH 5-2-1
GCD
Second inversion
G C D · RH 1-3-5 · LH 5-2-1

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Csus2 chord facts
SymbolCsus2
NotesC D G
Formula1 2 5
Intervalsroot, major second, perfect fifth
TypeSuspended second chord

Csus2 across the keyboard

C3C4C5C1D2G5C1D2G5C1

Piano, C3 to C5. Notes in this scale, low to high: C3 (1), D3 (2), G3 (5), C4 (1), D4 (2), G4 (5), C5 (1).

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Questions

What notes are in the Csus2 chord?

Csus2 (C suspended second) has three notes: C, D and G. Its formula is 1, 2, 5. C is the root, D is the major second and G is the perfect fifth.

How do you play Csus2 on piano?

Play C, D and G together. Root position: C D G · RH 1-2-5 · LH 5-3-1.

What key is Csus2 in?

In major keys, Csus2 is the Isus2 chord in C major, the IIsus2 in Bb major, the IVsus2 in G major, the Vsus2 in F major and the VIsus2 in Eb major. It is diatonic to those keys, so it fits songs in any of them.

What does sus mean in Csus2?

Suspended: the 3rd is replaced by the 2nd, D. With no 3rd, Csus2 is neither major nor minor, and it usually resolves to C or Cm.