Half diminished scale

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Half diminished scale
Modes I, II, III, IV, V, VI, VII
Component pitches
C, D, E, F, G, A, B
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 Dm75, which functions as a iiø7 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.[citation needed]


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