Half diminished scale
The half diminished scale is a seven-note musical scale. It is more commonly known as the Locrian ♮2 scale or the Aeolian ♭5 scale, names that avoid confusion with the diminished scale and the half-diminished seventh chord (minor seventh, diminished fifth). It is the sixth mode of the ascending melodic minor scale.
| Modes | I, II, III, IV, V, VI, VII |
|---|---|
| Component pitches | |
| C, D, E♭, F, G♭, A♭, B♭ | |
| Qualities | |
| Number of pitch classes | 7 |
| Forte number | 7-34 |
| Complement | 5-34 |
In the key of B♭, the half-diminished scale built on C is associated with Cm7♭5, which functions as a iiø7 chord in minor (see chord-scale system).
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