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MusicTheory

A music theory library for Swift OS X and iOS apps.

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MusicTheory

A music theory library for Swift OS X and iOS apps.

MusicTheory provides objects to work with musical keys, notes, scales and chords. It can be used to generate a scale from a key or note symbol, or a chord from a key and a chord degree for example. You can also use it to translate a sequence of notes to a sequence of MIDI values.

Installation

CocoaPods

Put this in your Podfile:

pod "MusicTheory", "~> 1.1"

Usage:

let cFlat = Note(name: "C♭")

let cFlatMinorScale = cFlat.scale("minor")

cFlatMinorScale.names // ["C♭", "D♭", "E♭♭", "F♭", "G♭", "A♭♭", "B♭♭"]
cFlatMinorScale.values // [59, 61, 62, 64, 66, 67, 69]

let cFlatMinChord = Chord(root: cFlat, type: "min") // or cFlat.chord("min")

cFlatMinChord.names // ["C♭", "E♭♭", "G♭"]
cFlatMinChord.values // [59, 62, 66]

let cFlatMajor = Key(note: cFlat, quality: "major")
let cFlatV7 = cFlatMajor.chord("V", type: "7")!

cFlatV7.name // "G♭7"
cFlatV7.notes.map { $0.name } // ["G♭", "B♭", "D♭", "F♭"]

For a list of all supported chord types see: Sources/Music.swift

For more usage examples see: Tests/MusicTheoryTests.swift

Contributing

Improvements are always welcome. Please follow these steps to contribute:

  1. Submit a Pull Request with a detailed explanation of changes and tests
  2. Receive a 👍 from a core team member
  3. Core team will merge your changes

License

See LICENSE.

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