Dominant 7th ♭9 ♯11 Chords on Piano

The dominant 7th ♭9 ♯11 chord is a heavily altered dominant voicing that combines the dark tension of the ♭9 with the bright lift of the ♯11. These two alterations pull in opposite directions — the ♭9 darkens, the ♯11 brightens — creating a complex, sophisticated sound heard in modern jazz and film scoring.

Formula: Root – Major 3rd – Diminished 5th – Perfect 5th – Minor 7th – Minor 9th

Scale degrees: 1–3–♭5–5–♭7–♭9

Sound: Complex, modern jazz, film score, multi-dimensional

Symbol: 7♭9♯11 (C7♭9♯11)