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Half diminished 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

The half diminished scale is a seven-note musical scale. It is more commonly known as the Locrian ?2 scale,^[1] a name that avoids confusion with the diminished scale and the half-diminished seventh chord (minor seventh, diminished fifth). It is the sixth mode of the ascending form of the melodic minor scale (or jazz scale).

$\relative c' { \clef treble \time 7/4 \hide Staff.TimeSignature c4^\markup { Half diminished scale on C } d es f ges aes bes c2 }$

In the key of C, the half-diminished scale built on D is associated with Dm^7?5, which functions as a ii ^ø⁷ chord in minor (see chord-scale system).

The Locrian ?2 scale is commonly used in jazz and some rock. It is commonly practiced by such neoclassical metal guitarists Michael Romeo, and such jazz pianists as Oscar Peterson and Jonah Cristall-Clarke.^[]

References

^ Arnold, Bruce. Music Theory Workbook for Guitar: Scale construction and application. muse eek publishing. p. 17. ISBN 1-890944-53-X. Retrieved 2009.

External links

Half Diminished Scale - Analysis

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[1] Arnold, Bruce. Music Theory Workbook for Guitar: Scale construction and application. muse eek publishing. p. 17. ISBN 1-890944-53-X. Retrieved 2009.

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