Bbm7#9#11 Minor 7th
The Bbm7#9#11 chord is built from the notes Bb – Db – F – Ab – C# – E.
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Also known as
Bbm9#11Bbmin9#11
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).
FFifth
Perfect fifth
Seven semitones — the most stable interval, reinforces the root.
AbSeventh
Minor seventh (♭7)
Ten semitones — the dominant/minor seventh. Adds bluesy tension (7, m7).
C#Extension
Sharp ninth (♯9)
A ♯9 — the gritty 'Hendrix' tension over a dominant chord.
EExtension
Sharp eleventh (♯11)
A ♯11 — the bright, floating Lydian color.
🎼 Related scales
Dorian ♯4 (Ukrainian)harmonic minor a perfect 4th below
🎹 Modal analysis
This chord implies the Dorian ♯4 (Ukrainian) scale; its characteristic note is the ♯4 / ♯11 (the Ukrainian color). It is a mode of the harmonic minor a perfect 4th below.
🎸 Genres
Gypsy jazz · Roma music · Klezmer · Classical