C♯7sus4

C♯1F♯4G♯5B♭7

A dominant seventh with the fourth standing in for the third.

Written the other way round it is D♭7sus4 — 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

x122

easy · no 5

Fig. 3

6879

hard

Fig. 4

667x

moderate · barre · no 5

Fig. 5

6674

hard · no 5

Fig. 6

6679

moderate · barre · no 5

What is true of it

C♯7sus4 is C♯, F♯, G♯ and B — 1, 4, 5 and b7 counted from C♯.

On an instrument that cannot reach all 4, the 5 goes first, in that order.

The easiest of the 5 fingerings below is x122: 3 fingers, held at the 1st 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.

2 of the 5 need a barre.

It leaves out the 5. 4 strings cannot carry 4 notes, and the 5 is the one this chord can lose without changing what it is.

1 string stays silent.

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♯7sus4/F♯

bb9b

second inversion

C♯7sus4/G♯

1122

third inversion

C♯7sus4/B

4644

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♯sus4suspended fourth C♯major C♯mminor C♯dimdiminished

C7sus4 D7sus4 D♯7sus4 E♭7sus4 E7sus4 F7sus4 F♯7sus4 G♭7sus4 all 374