Dark Music Concepts

A code model for western music concepts.

Roadmap

Feature	Implementation status
Notes	✅
Scales	✅
Chords	✅
Rhytms	🚧 (work in progress)

Status

Nuget

The core package

This is the main package. Contains all the music stuff, like notes, scales, etc.

DarkMusicConcepts is available using nuget. To install DarkMusicConcepts, run the following command in the Package Manager Console

PM> Install-Package Divis.DarkMusicConcepts

Units package

Units only. This tiny package only contains the Frequency, MidiNumber and MidiVelocity types.

DarkMusicConcepts.Units is available using nuget. To install DarkMusicConcepts.Units, run the following command in the Package Manager Console

PM> Install-Package Divis.DarkMusicConcepts.Units

How to use

Notes

var note = Note.Create(Pitch.E, Octave.Two);
// note.Name => E2
// note.Frequency => 82,4068892282175 Hz
// note.MidiNumber => 40

// Get note by name

var a1 = Notes.A1;

// Find note by frequency

var e2 = Note.FindByFrequency(Frequency.From(82.40));
var success = Note.TryFindByFrequency(Frequency.From(82.40), out var alsoE2);

// Find note by MIDI number

var f2 = Note.FindByMidiNumber(MidiNumber.From(41));
Note.TryFindByMidiNumber(MidiNumber.From(41), out var alsoF2);

// Note comparison

var a4 = Notes.A4;
var alsoA4 = Note.FindByMidiNumber(a4.MidiNumber);
var b5 = Notes.B5;

// a4 == alsoA4 => True
// a4 != alsoA4 => False
// a4.Equals(alsoA4) => True
// a4 == b5 => False
// a4 != b5 => True
// a4.Equals(b5) => False
// a4 > b5 => False
// b5 >= a4 => True

Intervals

var minorSecond = Intervals.MinorSecond;
// minorSecond.Distance => 1
// minorSecond.Name => Minor 2nd
// minorSecond.Accident => Flat
// Intervals.MajorSeventh > Intervals.PerfectFourth => True

// Transpose up or down

var g5 = Notes.C5.TransposeUp(Intervals.PerfectFifth); //returns G5
var transposeToG5Success = Notes.C5.TryTransposeUp(Intervals.PerfectFifth, out var alsoG5); //returns G5

var cSharp = Notes.F4.TransposeDown(Intervals.MajorThird); //returns CSharpOrDFlat4
var transposeToFSharpSuccess = Notes.C5.TryTransposeDown(Intervals.AugmentedFourth, out var fSharp); //returns FSharpOrGFlat4

Scales

var gPhrygian = ScaleFormulas.Phrygian.Create(Pitch.G);

// gPhrygian => G Phrygian
// gPhrygian.Pitches => G, GSharpOrAFlat, ASharpOrBFlat, C, D, DSharpOrEFlat, F
// gPhrygian.IV => C

Chords

var chord = Chord.Create(Notes.C2, ChordFormulas.DominantSeventh);

// chord => C2Dom7(C2, E2, G2, A#/Bb2)
// chord.Bass => C2
// chord.Lead => A#/Bb2
// chord.Formula => Dom7
// chord.Notes => C2, E2, G2, A#/Bb2

var chord1stInversion = chord.Invert(); // => C2Dom7(1st inversion)(E2, G2, A#/Bb2, C3)
var chord2ndInversion = chord1stInversion.Invert(); // => C2Dom7(2nd inversion)(G2, A#/Bb2, C3, E3)
var chord3rdInversion = chord2ndInversion.Invert(); // => C2Dom7(3rd inversion)(A#/Bb2, C3, E3, G3)
var chord4thInversion = chord3rdInversion.Invert(); // => C3Dom7(C3, E3, G3, A#/Bb3)


// Chord builder

var customChord = Chord
    .CreateCustom(Notes.G3)
    .With(ChordFunctions.Third)
    .With(ChordFunctions.Fifth, Accident.Sharp)
    .With(ChordFunctions.Eleventh, Accident.Flat)
    .Build();
// => G3Custom(G3, B3, D#/Eb4, B4)


// Chords from scale degrees

var cMajorScale = ScaleFormulas.Ionian.Create(Pitch.C);
var octave = Octave.Four;

Chord.Create(cMajorScale, octave, ScaleDegree.I); // => C4Maj(C4, E4, G4)
Chord.Create (cMajorScale, octave, ScaleDegree.II); //  => D4Custom(D4, F4, A4)
Chord.Create (cMajorScale, octave, ScaleDegree.III); //  => E4Custom(E4, G4, B4)
Chord.Create (cMajorScale, octave, ScaleDegree.IV); //  => F4Maj(F4, A4, C5)
Chord.Create (cMajorScale, octave, ScaleDegree.V); //  => G4Maj(G4, B4, D5)
Chord.Create (cMajorScale, octave, ScaleDegree.VI); //  => A4Custom(A4, C5, E5)
Chord.Create (cMajorScale, octave, ScaleDegree.VII); //  => B4Custom(B4, D5, F5)


// Chords from scale degrees

// The following will create a triad based on the major scale. Starting with the root pitch, then skipping one pitch and taking the next.
Chord.Create(cMajorScale, cMajorScale.Root, octave, ScaleStep.II, ScaleStep.II); //  => C4Maj(C4, E4, G4)


// Chords from types (tertian, quartal, etc.)

Chord.Create(cMajorScale, octave, Pitch.C, ChordType.Tertian, amountOfNotes: 4); //  => C4Maj7(C4, E4, G4, B4)
Chord.Create(cMajorScale, octave, Pitch.C, ChordType.Quartal, amountOfNotes: 4); //  => C4Custom(C4, F4, B4, E5)
Chord.Create(cMajorScale, octave, Pitch.C, ChordType.Quintal, amountOfNotes: 4); //  => C4Custom(C4, G4, D5, A5)
Chord.Create(cMajorScale, octave, Pitch.C, ChordType.Sextal, amountOfNotes: 4); //  => C4Custom(C4, A4, F5, D6)
Chord.Create(cMajorScale, octave, Pitch.C, ChordType.Septimal, amountOfNotes: 4); //  => C4Custom(C4, B4, A5, G6)


// Chords progressions

var chordProgression = ChordProgressions.Pop.I_IV_V_IV; // => I - IV - V - IV

var customChordProgression = ChordProgression.Create(ScaleDegree.I, ScaleDegree.IV, ScaleDegree.V, ScaleDegree.II, ScaleDegree.VI); // => I - IV - V - II - VI

var customChordProgressionChords = customChordProgression.GetChords(cMajorScale, octave);
// =>
//     C4Maj(C4, E4, G4)
//     F4Maj(F4, A4, C5)
//     G4Maj(G4, B4, D5)
//     D4Custom(D4, F4, A4)
//     A4Custom(A4, C5, E5)

Time

Time.QuarterNote; // => 960 ticks
Time.WholeNote; // => 3 840 ticks
Time.Bar; // => 15 360 ticks
Time.QuarterNote.GetDuration(Bpm.From(155)); // => 00:00:00.3870967
Time.QuarterNote.Ticks; // => 960
Time.QuarterNote * 3; // => 2 880 ticks
Time.HalfNoteDotted + Time.Bar - (Time.SixteenthNote * 8); // => 16 320 ticks

Checkout the sample apps to learn more:

vvanhee / dark-music-concepts