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C9#11 Piano Chord

A Lydian dominant chord — a bright, open sound. Typical of modern jazz.

Piano

Recommended voicing
Left hand C3 · Bb3 fingers 5–1
Right hand E4 · F#4 · D5 fingers 1–2–5

How to play the C9#11 chord on piano

Split the recommended voicing between the hands: play C3 and Bb3 with the left hand and E4, F#4 and D5 with the right. Suggested fingering is 5–1 on the left and 1–2–5 on the right (1 is the thumb). The perfect fifth G can usually be omitted from an extended chord, keeping the sound clear and the voicing manageable.

Notation for C9#11 chord

Other names: C 9th sharp 11

Music theory name: ninth sharp eleven chord

Common name: C 9#11 chord

Intervals and tones in C9#11 chord

Note Interval
C Root
E Major 3rd
G Perfect 5th
B Minor 7th
D Major 9th
F# Augmented 11th

More chords with C as the root

The same chord type in other keys