music-chord

    1.2.1 • Public • Published

    music-chord npm version

    tonal

    music-chord is a function to create music chords. They can be created from a chord name (it includes a chord dictionary) or from a list of intervals:

    var chord = require('music-chord')
    // get chord notes using name
    chord('Cmaj7') // => ['C', 'E', 'G', 'B']
    // get chord notes using type and tonic
    chord('maj7', 'C2') // => ['C2', 'E2', 'G2', 'B2']
    // get chord intervals (tonic false)
    chord('maj7', false) // => ['1P', '3M', '5P', '7M']
    // partially applied
    var maj7 = chord('maj7')
    maj7('C') // => ['C', 'E', 'G', 'B']
    // create chord from intervals
    chord('1 3 5 m7 m9', 'C') // => ['C', 'E', 'G', 'Bb', 'Db']

    This is part of tonal:

    var tonal = require('tonal')
    tonal.chord('C7') // => ['C', 'E', 'G', 'Bb']

    Install via npm: npm i --save music-chord

    Usage

    Chords are arrays of notes ordered by pitch. Not always the first not is the tonic of the chord.

    Create chords from a collection of notes or intervals

    You can create chords by a list of intervals and a tonic. If the tonic is a pitch class (a note with octave) the chord notes are pitch classes:

    chord('1 b3 5 b7 9', 'C2') // => ['C2', 'Eb2', 'G2', 'Bb2', 'D3']
    chord('1 b3 5 b7 9', 'C') // => ['C', 'Eb', 'G', 'Bb', 'D']

    Like most tonal functions, it can be partially applied:

    var m7 = chord('1 b3 5 b7')
    m7('C') // => ['C', 'Eb', 'G', 'Bb']

    You can also create a chord from a list of notes (the first is considered to be the tonic):

    var dom = chord('A C# E G')
    dom('D') // => ['D', 'F#', 'G', 'C']

    Get chord intervals

    If false is passed as tonic, you can get chord intervals:

    chord('maj7', false) // => ['1P', '3m', '5P', '7M']

    Get chord names

    The names function return the available chord names:

    chord.names() // => ['Maj7', 'm7', ...]
    chord.names(true) // => ['Maj7', 'm7', ...] <= with aliases

    License

    MIT License

    Install

    npm i music-chord

    DownloadsWeekly Downloads

    12

    Version

    1.2.1

    License

    MIT

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