Gbm9addb13 Minor 7th
The Gbm9addb13 chord is built from the notes Gb – Bbb – Db – Fb – Ab – Ebb.
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Also known as
Gbm9b13Gbmin9b13
Chord tones, one by one
GbRoot
Root
The fundamental note the chord is built on — Gb.
BbbThird
Minor third
Three semitones — makes the chord minor (darker, sadder).
DbFifth
Perfect fifth
Seven semitones — the most stable interval, reinforces the root.
FbSeventh
Minor seventh (♭7)
Ten semitones — the dominant/minor seventh. Adds bluesy tension (7, m7).
AbExtension
Ninth (9)
A 9th — colorful extension a whole step above the octave.
EbbExtension
Flat thirteenth (♭13)
A ♭13 — dark altered tension over a dominant chord.
🎼 Related scales
🎹 Modal analysis
This chord implies the Aeolian (natural minor) scale; its characteristic note is the dark ♭6.
🎸 Genres
Rock · Pop · Cinematic