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Ab9#11 Piano Chord

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

Piano

Recommended voicing
Left hand Ab2 · F#3 fingers 5–1
Right hand D4 · Bb4 · C5 fingers 1–4–5

How to play the Ab9#11 chord on piano

Split the recommended voicing between the hands: play Ab2 and F#3 with the left hand and D4, Bb4 and C5 with the right. Suggested fingering is 5–1 on the left and 1–4–5 on the right (1 is the thumb). The perfect fifth Eb can usually be omitted from an extended chord, keeping the sound clear and the voicing manageable.

Notation for Ab9#11 chord

Other names: Ab 9th sharp 11

Music theory name: ninth sharp eleven chord

Common name: Ab 9#11 chord

Intervals and tones in Ab9#11 chord

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

More chords with Ab as the root

The same chord type in other keys