Class: Musa::Scales::PhrygianDominantScaleKind

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

Overview

Phrygian dominant scale kind (Spanish Phrygian).

PhrygianDominantScaleKind defines the Phrygian dominant scale (also called Spanish Phrygian, Freygish, or Spanish Gypsy scale), the fifth mode of harmonic minor. It's the quintessential flamenco scale.

Pitch Structure

7 diatonic degrees plus extended harmony:

Scale Degrees (uppercase for major 3rd quality):

  • I (tonic): Root (0 semitones)
  • II (supertonic): Minor second (1 semitone) ← PHRYGIAN
  • III (mediant): Major third (4 semitones) ← DOMINANT
  • IV (subdominant): Perfect fourth (5 semitones)
  • V (dominant): Perfect fifth (7 semitones)
  • VI (submediant): Minor sixth (8 semitones)
  • VII (subtonic): Minor seventh (10 semitones)

Key Features

  • Phrygian's minor second (exotic)
  • Dominant's major third (strong harmonic character)
  • Creates the characteristic flamenco sound

Musical Character

The Phrygian dominant scale:

  • The sound of flamenco and Spanish guitar
  • Works over dominant chords resolving to minor
  • Common in klezmer and Middle Eastern music too
  • Intensely expressive and dramatic

Usage

e_phry_dom = Scales[:et12][440.0][:phrygian_dominant][64]
e_phry_dom.tonic  # E (64)
e_phry_dom.II     # F (65) - minor second (Phrygian)
e_phry_dom.III    # G# (68) - major third (Dominant)

See Also:

Constant Summary collapse

@@pitches = 
[{ functions: %i[I _1 tonic first],
pitch: 0 },
             { functions: %i[II _2 supertonic second],
pitch: 1 },
             { functions: %i[III _3 mediant third],
pitch: 4 },
             { functions: %i[IV _4 subdominant fourth],
pitch: 5 },
             { functions: %i[V _5 dominant fifth],
pitch: 7 },
             { functions: %i[VI _6 submediant sixth],
pitch: 8 },
             { functions: %i[VII _7 subtonic seventh],
pitch: 10 },
             { functions: %i[VIII _8 eighth],
pitch: 12 },
             { functions: %i[IX _9 ninth],
pitch: 12 + 1 },
             { functions: %i[X _10 tenth],
pitch: 12 + 4 },
             { functions: %i[XI _11 eleventh],
pitch: 12 + 5 },
             { functions: %i[XII _12 twelfth],
pitch: 12 + 7 },
             { functions: %i[XIII _13 thirteenth],
pitch: 12 + 8 }].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/ethnic/phrygian_dominant_scale_kind.rb', line 91

def grades
  7
end

.id ⇒ Object 



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# File 'lib/musa-dsl/music/scale_kinds/ethnic/phrygian_dominant_scale_kind.rb', line 95

def id
  :phrygian_dominant
end

.pitches ⇒ Object 



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# File 'lib/musa-dsl/music/scale_kinds/ethnic/phrygian_dominant_scale_kind.rb', line 87

def pitches
  @@pitches
end