C-6(b5#9) Diminished
The C-6(b5#9) chord is built from the notes C – Eb – Gb – A – D#.
Piano sound loads on first tap.
Chord tones, one by one
CRoot
Root
The fundamental note the chord is built on — C.
EbThird
Minor third
Three semitones — makes the chord minor (darker, sadder).
GbFifth
Diminished fifth (♭5)
Six semitones — a flat fifth. Creates instability, typical of m7♭5 and diminished chords.
AExtension
Thirteenth (13)
A 13th — full, rich top extension.
D#Extension
Sharp ninth (♯9)
A ♯9 — the gritty 'Hendrix' tension over a dominant chord.
🎼 Related scales
🎹 Modal analysis
This chord implies the Whole-half diminished scale.
🎸 Genres
Bebop jazz · Hard bop · Gypsy jazz