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 ukulele on piano the scale

Every fingering that fits a hand

Fig. 2

99bb99

moderate · barre

Fig. 3

x44674

moderate · barre

Fig. 4

x4412x

hard

Fig. 5

9bbb99

hard · barre

Fig. 6

99bb9x

moderate · barre

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 5 fingerings below is 99bb99: 3 fingers, one of them barring the 9th fret, held at the 9th 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.

4 of the 5 need a barre.

Where its notes are on the neck

Fig. 7 — 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♯

xx4122

second inversion

C♯sus4/G♯

444674

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