About the G Scriabin scale
G Scriabin is used for impressionist and mystical concert music. Think of it as a five-note scale from the late, mystical harmony of Scriabin. It is G Major Pentatonic with the second lowered.
Its notes are G, A♭, B, D, and E. The formula is H 1½ 1½ W 1½.
Also called Major Pentatonic ♭2 and Vibhas.
G Scriabin uses one black key on the piano, A♭.