Iwato guitar scale
See the Iwato scale on a guitar fretboard, learn its notes and degrees, and practice it in any key.
What it is
A five note Japanese scale with a flat 2nd and a flat 5th. Dark, tense and unstable, close to Locrian.
How to use it
Play it over a suspended chord or a chord with a flat 5th, as a dark colour. Very rare in popular music.