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C#aug9 Guitar Chord

A rich chord extending aug7 with a ninth. Found in jazz and funk. On guitar, the perfect fifth is commonly omitted as it is replaced by the augmented fifth.

Guitar

Strings X–4–3–4–4–5

How to play the C#aug9 chord on guitar

Read the string pattern X–4–3–4–4–5 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) Muted
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 · ring finger
1st string (high E) Fret 5 · pinky

Other names for the C#aug9 chord

Other names: C# augmented 9th, C#+9

Music theory name: augmented ninth chord

Common name: C# augmented ninth chord

Notes and intervals in the C#aug9 chord

Note Interval
C# Root
E# Major 3rd
A Augmented 5th
B Minor 7th
D# Major 9th

All variations

Fret 3
X–4–3–4–4–5
Fret 7
9–8–7–8–0–X
Fret 8
9–8–9–8–10–X
Fret 9
9–12–9–10–0–11

More chords with C# as the root

The same chord type in other keys