G♭Phrygian
Flat 2nd gives it a Spanish/Middle Eastern flavor.
Scale Notes
G♭4G4A4B4D♭5D5E5
1 - 2 - 2 - 2 - 1 - 2 - 2 (semitone intervals)
Fretboard
Piano Keyboard
Diatonic Chords in G♭ Phrygian
i
G♭m
G♭ · A · D♭
II
G
G · B · D
III
A
A · D♭ · E
iv
Bm
B · D · G♭
v°
D♭dim
D♭ · E · G
VI
D
D · G♭ · A
vii
Em
E · G · B