Class: Musa::Scales::MelodicMinorScaleKind Private

Inherits:
ScaleKind show all
Defined in:
lib/musa-dsl/music/scale_kinds/melodic_minor/melodic_minor_scale_kind.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Melodic minor scale kind (ascending form).

MelodicMinorScaleKind defines the melodic minor scale in its ascending form (also called jazz minor). It has a minor third but major sixth and seventh, creating a unique hybrid between minor and major qualities.

Pitch Structure

7 diatonic degrees plus extended harmony:

Scale Degrees (lowercase for minor quality):

  • i (tonic): Root (0 semitones)
  • ii (supertonic): Major second (2 semitones)
  • iii (mediant): Minor third (3 semitones) ← MINOR
  • iv (subdominant): Perfect fourth (5 semitones)
  • v (dominant): Perfect fifth (7 semitones)
  • vi (submediant): Major sixth (9 semitones) ← MAJOR
  • vii (leading): Major seventh (11 semitones) ← MAJOR

Relationship to Other Scales

  • Minor third (like natural minor)
  • Major 6th and 7th (like major scale)
  • Parent scale for many jazz modes (Lydian Dominant, Altered, etc.)

Musical Character

The melodic minor scale:

  • Minor quality with major upper structure
  • Essential in jazz harmony
  • Less dark than harmonic minor (no augmented 2nd)
  • Smooth melodic contour

Usage

c_mel_min = Scales[:et12][440.0][:minor_melodic][60]
c_mel_min.tonic    # C (60)
c_mel_min.mediant  # Eb (63) - minor third
c_mel_min.leading  # B (71) - major seventh

See Also:

Constant Summary collapse

@@pitches =

This classvariable is part of a private API. You should avoid using this classvariable if possible, as it may be removed or be changed in the future. 

[{ functions: %i[i _1 tonic first],
pitch: 0 },
             { functions: %i[ii _2 supertonic second],
pitch: 2 },
             { functions: %i[iii _3 mediant third],
pitch: 3 },
             { functions: %i[iv _4 subdominant fourth],
pitch: 5 },
             { functions: %i[v _5 dominant fifth],
pitch: 7 },
             { functions: %i[vi _6 submediant sixth],
pitch: 9 },
             { functions: %i[vii _7 leading seventh],
pitch: 11 },
             { functions: %i[viii _8 eighth],
pitch: 12 },
             { functions: %i[ix _9 ninth],
pitch: 12 + 2 },
             { functions: %i[x _10 tenth],
pitch: 12 + 3 },
             { functions: %i[xi _11 eleventh],
pitch: 12 + 5 },
             { functions: %i[xii _12 twelfth],
pitch: 12 + 7 },
             { functions: %i[xiii _13 thirteenth],
pitch: 12 + 9 }].freeze

Class Method Summary collapse

Constructor Details

This class inherits a constructor from Musa::Scales::ScaleKind

Class Method Details

.grades ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/musa-dsl/music/scale_kinds/melodic_minor/melodic_minor_scale_kind.rb', line 92

def grades
  7
end

.id ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/musa-dsl/music/scale_kinds/melodic_minor/melodic_minor_scale_kind.rb', line 96

def id
  :minor_melodic
end

.pitches ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/musa-dsl/music/scale_kinds/melodic_minor/melodic_minor_scale_kind.rb', line 88

def pitches
  @@pitches
end