Space plays and stops
- Notes and intervals
- Gbm3BbbM3Dbm3Fb
Gb Minor 7, written Gbm7, is built from Gb, Bbb, Db and Fb: the root, minor 3rd, 5th and minor 7th.
Its 3rd and 7th, Bbb and Fb, 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, Gbm7 is the iv7 of the Backdoor ii-V-I Progression in Db, the i7 of the Minor i-vi-ii-V Progression in Gb, the ♭iii7 of the Half-Step ii-V Chain in Eb and the ♭ii7 of the Modal AABA in F.