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https://www.youtube.com/watch?v=ncc9NdOk-QoLearn the theory
G flat Aeolian (Minor) (Theoretical Scale)
G♭
A♭
B𝄫
C♭
D♭
E𝄫
F♭
G♭
A♭
B𝄫
C♭
D♭
E𝄫
F♭