Explore the C# 9(#11) Guitar Chord Interactively

C# 9(#11) position 1 guitar chord diagram

C#9(#11) (C# ninth sharp eleven) follows the formula 1, 3, 5, b7, 9, #11, so on C# it reads C#, E#, G#, B, D# and F##. Its top two notes, D# and F##, are the ninth and the sharp eleventh, a major third apart.

The tool offers a single voicing, a barre shape between fret 3 and fret 4. Over it you can solo with the C# Lydian Dominant scale, the fourth mode of the melodic minor scale, which contains every chord tone and adds only a sixth.

Pick a tempo for the drum loop in the player at the top of the page and repeat the chord in time.

C# 9th with sharp 11th guitar chord is also written as C#9(#11), C#9#11 or C#9+11.

C# 9(#11) chord Notes:

C# E# G# B D# F##

How to create the Dominant Ninth Sharp Eleventh Added chord:

Formula: 1 3 5 b7 9 #11

C# 9(#11) Chord Interactive Fretboard

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Go to the full guitar chords tutorial.

C# 9(#11) Guitar Chord Diagrams

Position 1 Barre Movable

Finger Positions

Mute the low E string
Place your index finger (1) on the fret 3 of the D and high E strings at the same time
Place your middle finger (2) on the fret 4 of the A string
Place your ring finger (3) on the fret 4 of the G string
Place your pinky finger (4) on the fret 4 of the B string

Find more shapes in our all guitar chords online library. If you prefer a printable pdf, download the Free Guitar Chords Chart Pdf

Play This Chord With Other Roots

C 9(#11) | D 9(#11) | E 9(#11) | F 9(#11) | G 9(#11) | A 9(#11) | B 9(#11) | C#9(#11) | D#9(#11) | F#9(#11) | G#9(#11) | A#9(#11) | Ab9(#11) | Bb9(#11) | Db9(#11) | Eb9(#11) | Gb9(#11)

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Created by

Giancarlo Facoetti

Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher

FAQ

What are the notes of C#9(#11)?

C#9(#11) is spelled C#, E#, G#, B, D# and F##. That is the root, major third, perfect fifth, minor seventh, ninth and sharp eleventh.

How many ways are there to play C#9(#11) on guitar?

Only one valid voicing is on record for C#9(#11). It is a barre voicing spanning frets 3 to 4, and there are no open string voicings.

Why is the sharp eleventh in C#9(#11) written F##?

The perfect eleventh over C# is F#, because the letter F sits a fourth higher than C. Raising it by a half step gives F##, which keeps the interval name correct instead of rewriting it as G.

Do C#9(#11) and Db9(#11) sound identical?

Yes, they sound identical. Db9(#11) is spelled Db, F, Ab, Cb, Eb and G, so only the note names differ from C#9(#11).

What scale works over C#9(#11)?

The C# Lydian Dominant scale has C#, D#, E#, F##, G#, A# and B. It contains every chord tone and adds just A#.