Gb-maj7 Diminished
The Gb-maj7 chord is built from the notes Gb – Bbb – Dbb – F.
Piano sound loads on first tap.
Also known as
Gb-maj7b5Gbdim(maj7)Gbdimmaj7Gbm(b5)maj7Gbm(maj7b5)Gbm7b5(maj7)
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).
DbbFifth
Diminished fifth (♭5)
Six semitones — a flat fifth. Creates instability, typical of m7♭5 and diminished chords.
FSeventh
Major seventh
Eleven semitones — a lush, jazzy seventh just below the octave (maj7).
🎼 Related scales
🎹 Modal analysis
This chord implies the Whole-half diminished scale.
🎸 Genres
Bebop jazz · Hard bop · Gypsy jazz