Half Diminished Locrian
This scale corresponds to the VII mode of the major scale.
With the diminished III degree (Eb) it has a minor characteristic.
The Locrian scale fits the half diminished chord. The symbol for the half diminished chords is a circle with a diagonal line: Ø
Attention: The 2nd degree sounds dissonant.
The Half Diminished Locrian scale is easy to learn, because it has the same notes as a major scale a half note higher.
This can be seen best by comparing the B Half Diminished Locrian scale and the C major scale.
Half Diminished Locrian #2
This scale is the VI mode of the Melodic Minor scale. This scale is not on the ScaleTwister, but is derived easily from the Half Diminished Locrian scale.
Here are the two Half Diminished Locrian scales for comparison. The difference is on the II degree.