Module: HeadMusic::Content::CantusFirmusExamples

Defined in:
lib/head_music/content/cantus_firmus_examples.rb

Overview

Sample cantus firmus examples from various pedagogical sources. These are traditional melodies used for teaching counterpoint.

Constant Summary collapse

FUX = 
[
  {source: "Fux", tonality: "D dorian", pitches: %w[D F E D G F A G F E D]},
  {source: "Fux", tonality: "E phrygian", pitches: %w[E C D C A3 A G E F E]},
  {source: "Fux", tonality: "F lydian", pitches: %w[F G A F D E F C5 A F G F]},
  {source: "Fux", tonality: "G mixolydian", pitches: %w[G3 C B3 G3 C E D G E C D B3 A3 G3]},
  {source: "Fux", tonality: "A aeolian", pitches: %w[A3 C B3 D C E F E D C B3 A3]},
  {source: "Fux", tonality: "C ionian", pitches: %w[C E F G E A G E F E D C]},
  {source: "Fux", tonality: "C ionian", pitches: %w[C E F E G F E D C]}
].freeze
CLENDINNING = 
[
  {source: "Clendinning", name: "F major", tonality: "F major", pitches: %w[F3 G3 A3 F3 D3 E3 F3 C4 A3 F3 G3 F3]},
  {source: "Clendinning", name: "D minor", tonality: "D minor", pitches: %w[D3 A3 G3 F3 E3 D3 F3 E3 D3]},
  {source: "Clendinning", name: "C major (treble)", tonality: "C major", pitches: %w[C D F E F G A G E D C]},
  {source: "Clendinning", name: "C major (bass)", tonality: "C major", pitches: %w[C3 E3 F3 G3 E3 A3 G3 E3 F3 E3 D3 C3]}
].freeze
DAVIS_AND_LYBBERT = 
[
  {source: "Davis & Lybbert", name: "CF 1 in C major", tonality: "C major", pitches: %w[C3 E3 D3 G3 A3 G3 E3 F3 D3 C3]},
  {source: "Davis & Lybbert", name: "CF 2 in C major", tonality: "C major", pitches: %w[C3 D3 E3 G3 A3 F3 E3 D3 C3]},
  {source: "Davis & Lybbert", name: "CF 3 in G major", tonality: "G major", pitches: %w[G3 F#3 G3 E3 D3 B2 C3 D3 B2 A2 G2]},
  {source: "Davis & Lybbert", name: "CF 4 in G major", tonality: "G major", pitches: %w[G2 B2 C3 D3 E3 D3 B2 C3 A2 G2]},
  {source: "Davis & Lybbert", name: "CF 5 in F major", tonality: "F major", pitches: %w[F3 D3 C3 F3 G3 A3 E3 D3 G3 F3]},
  {source: "Davis & Lybbert", name: "CF 6 in A minor", tonality: "A minor", pitches: %w[A2 E3 C3 D3 B2 G2 A2 C3 B2 A2]},
  {source: "Davis & Lybbert", name: "CF 7 in A minor", tonality: "A minor", pitches: %w[A2 B2 C3 D3 E3 F3 E3 C3 B2 A2]},
  {source: "Davis & Lybbert", name: "CF 8 in E minor", tonality: "E minor", pitches: %w[E3 A3 B3 G3 C4 A3 B3 G3 F#3 E3]},
  {source: "Davis & Lybbert", name: "CF 9 in E minor", tonality: "E minor", pitches: %w[E3 D3 C3 B2 G2 A2 B2 E3 G3 F#3 E3]},
  {source: "Davis & Lybbert", name: "CF 10 in D minor", tonality: "D minor", pitches: %w[D3 F3 E3 G3 F3 D3 A3 G3 F3 E3 D3]}
].freeze
SCHOENBERG = 
[
  {source: "Schoenberg", tonality: "Eb major", pitches: %w[Eb D G3 Ab3 C Ab3 F3 Eb3]},
  {source: "Schoenberg", tonality: "A major", pitches: %w[A3 C#4 B3 F#3 A3 F#3 G#3 A3]}
].freeze
EXAMPLES = 
(FUX + CLENDINNING + DAVIS_AND_LYBBERT + SCHOENBERG).freeze

Class Method Summary collapse

Class Method Details

.all ⇒ Object 



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# File 'lib/head_music/content/cantus_firmus_examples.rb', line 44

def all
  EXAMPLES
end

.by_source(source) ⇒ Object 



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# File 'lib/head_music/content/cantus_firmus_examples.rb', line 48

def by_source(source)
  EXAMPLES.select { |ex| ex[:source] == source }
end

.sources ⇒ Object 



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# File 'lib/head_music/content/cantus_firmus_examples.rb', line 52

def sources
  EXAMPLES.map { |ex| ex[:source] }.uniq
end