A Music Theory library for .NET
Bach is a .NET Core library that enables expressing Western tonal musical concepts in C#: Pitches, Intervals, Scales, Triads, Chords, Modes, etc.
This library has been a pet project of mine while learning a bit of music theory and, at the same time, keeping my C# and .NET skills up to date while I've been off doing C++ for quite a while.
Scales and chords are created from root pitches and formulas that describe them; these formulas are maintained in an extensible registry.
For example, to list all the scale formulas in the registry
foreach( var formula in Registry.ScaleFormulas )
{
Console.WriteLine( $"Scale name '{formula.Name}', Intervals: '{formuula.Intervals}'" );
}To display the intervals between a set of pitch classes:
var pitches = PitchClassCollection.Parse( "C,D,F,A" );
var intervals = pitches.Intervals().Select( interval => interval.ToString( "Sq" ) );
Console.WriteLine( $"Intervals: {string.Join( ",", intervals )}" );To obtain the list of scales that contain a set of pitch classes:
var pitches = PitchClassCollection.Parse( "C,D,F#,A" );
foreach( var scale in Scale.ScalesContaining( pitches ) )
{
Console.WriteLine( $"Scale name: '{scale.Name}'");
}The included command line application demonstrates some of the available functionality:
- Dump the list of scales or chords in the registry,
- List the pitches and intervals in a scale or chord for a root pitch.
- Infer the intervals between a set of pitches.
- Infer the list of scales that contain a given set of pitches.
- Feel free to make pull requests or fix any existing bugs.
- Feel free to open issues if you find music theory mistakes, bugs, or unexpected behavior.