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C#9b5 Guitar Chord

A tense jazz chord with a tritone. Often serves as a tritone substitution for the dominant. The fifth is already altered, so the perfect fifth is not played — the remaining notes are all included.

Guitar

Strings X–4–3–4–4–3

How to play the C#9b5 chord on guitar

Read the string pattern X–4–3–4–4–3 from the low E string to the high E string. Numbers in the pattern are frets; numbers in the colored dots are left-hand fingers. X means a muted string and 0 means an open string.

6th string (low E) Do not play
5th string (A) Fret 4 · middle finger
4th string (D) Fret 3 · index finger
3rd string (G) Fret 4 · ring finger
2nd string (B) Fret 4 · little finger
1st string (high E) Fret 3 · index finger

Notation for C#9b5 chord

Other names: C# 9th flat 5

Music theory name: ninth flat five chord

Common name: C# 9b5 chord

Intervals and tones in C#9b5 chord

Note Interval
C# Root
F Major 3rd
G Diminished 5th
H Minor 7th
Eb Major 9th

All Variations

Open
X–4–3–4–4–3
Fret 8
9–8–9–8–8–9
Fret 9
9–10–X–10–0–11

More chords with C# as the root

The same chord type in other keys