Class: Musa::Scales::LydianAugmentedScaleKind

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

Overview

Lydian augmented scale kind (third mode of melodic minor).

LydianAugmentedScaleKind defines the Lydian augmented scale, the third mode of the melodic minor scale. It combines the Lydian's raised fourth with an augmented (raised) fifth.

Pitch Structure

7 diatonic degrees plus extended harmony:

Scale Degrees (uppercase for major quality):

  • I (tonic): Root (0 semitones)
  • II (supertonic): Major second (2 semitones)
  • III (mediant): Major third (4 semitones)
  • IV (subdominant): Augmented fourth (6 semitones) ← LYDIAN
  • V (dominant): Augmented fifth (8 semitones) ← AUGMENTED
  • VI (submediant): Major sixth (9 semitones)
  • VII (leading): Major seventh (11 semitones)

Relationship to Other Modes

  • Lydian with augmented 5th
  • 3rd mode of melodic minor
  • Contains both #4 and #5

Musical Character

The Lydian augmented scale:

  • Extremely bright and ethereal
  • Used over maj7#5 and maj7#11 chords
  • Dreamy, floating quality
  • Common in contemporary jazz and film music

Usage

eb_lyd_aug = Scales[:et12][440.0][:lydian_augmented][63]
eb_lyd_aug.tonic  # Eb (63)
eb_lyd_aug.IV     # A (69) - augmented fourth
eb_lyd_aug.V      # B (71) - augmented fifth

See Also:

Constant Summary collapse

@@pitches = 
[{ functions: %i[I _1 tonic first],
pitch: 0 },
             { functions: %i[II _2 supertonic second],
pitch: 2 },
             { functions: %i[III _3 mediant third],
pitch: 4 },
             { functions: %i[IV _4 subdominant fourth],
pitch: 6 },
             { functions: %i[V _5 dominant fifth],
pitch: 8 },
             { 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 + 4 },
             { functions: %i[XI _11 eleventh],
pitch: 12 + 6 },
             { functions: %i[XII _12 twelfth],
pitch: 12 + 8 },
             { 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 



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# File 'lib/musa-dsl/music/scale_kinds/melodic_minor/lydian_augmented_scale_kind.rb', line 91

def grades
  7
end

.id ⇒ Object 



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# File 'lib/musa-dsl/music/scale_kinds/melodic_minor/lydian_augmented_scale_kind.rb', line 95

def id
  :lydian_augmented
end

.pitches ⇒ Object 



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# File 'lib/musa-dsl/music/scale_kinds/melodic_minor/lydian_augmented_scale_kind.rb', line 87

def pitches
  @@pitches
end