Bbo(b11) Diminished
The Bbo(b11) chord is built from the notes Bb – Db – Fb – Abb – D.
Piano sound loads on first tap.
Chord tones, one by one
BbRoot
Root
The fundamental note the chord is built on — Bb.
DbThird
Minor third
Three semitones — makes the chord minor (darker, sadder).
FbFifth
Diminished fifth (♭5)
Six semitones — a flat fifth. Creates instability, typical of m7♭5 and diminished chords.
AbbSeventh
Diminished seventh (♭♭7)
Nine semitones — a doubly-flat seventh, found in fully diminished 7th chords.
DExtension
Extension (16 st)
An upper extension 16 semitones above the root.
🎼 Related scales
Lydian ♯2harmonic minor a major 3rd below
🎹 Modal analysis
This chord implies the Lydian ♯2 scale; its characteristic note is the ♯2 / ♯9 (augmented 2nd). It is a mode of the harmonic minor a major 3rd below.
🎸 Genres
Gypsy jazz · Roma music · Klezmer · Classical