Space plays and stops
- Notes and intervals
- GbM3Bbm3DbM3F
Gb Major 7, written Gbmaj7, is built from Gb, Bb, Db and F: the root, major 3rd, 5th and major 7th.
Its 3rd and 7th, Bb and F, are its guide tones: they say what kind of chord it is, so voicings are built around them and the root is often left to the bass.
In the progressions here, Gbmaj7 is the Imaj7 of the Major ii-V-I Progression in Gb, the IVmaj7 of the Minor Plagal Cadence in Db, the ♭IIImaj7 of the Tadd Dameron Turnaround in Eb and the ♭VImaj7 of the Coltrane Changes in Bb.