C♯sus4

C♯1F♯4G♯5

The third replaced by the fourth, which leans on the third it is standing in for.

Written the other way round it is D♭sus4 — the same twelve keys on a piano, a different piece of notation.

on guitar on piano the scale

Every fingering that fits a hand

Fig. 2

6644

moderate

Fig. 3

664x

easy

Fig. 4

6899

hard

What is true of it

C♯sus4 is C♯, F♯ and G♯ — 1, 4 and 5 counted from C♯.

These are also the notes of F♯sus2/C♯ and G♭sus2/C♯. Which name is right depends on what is underneath and what came before — the notes alone do not decide.

The easiest of the 3 fingerings below is 6644: 4 fingers, held at the 4th fret.

None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.

Where its notes are on the neck

Fig. 5 — first 12 frets

The brass dots are C♯, the root. Everything else is a chord tone with its degree printed in it.

With a different note underneath

first inversion

C♯sus4/F♯

x644

second inversion

C♯sus4/G♯

112x

An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.

C♯ in other shapes

C♯sus2suspended second C♯7sus4dominant seventh suspended fourth C♯major C♯mminor C♯dimdiminished

Csus4 Dsus4 D♯sus4 E♭sus4 Esus4 Fsus4 F♯sus4 G♭sus4 all 374