Skip to content
collection of typescript scripts for generating music
Branch: master
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
public
views
.gitignore
LICENSE
MusicMaker.js
MusicMaker.ts
README.md
app.js
demo1.ts
demo2.ts
demo3.ts
demo4.ts
demo5.ts
demo6.ts
go.bat
go.sh
package.json
test.mid
tsconfig.json

README.md

music_maker

collection of typescript scripts for generating music

For a project overview, check the following blog post: http://innovativeteams.net/music-maker-using-nodejs-to-create-songs/

I do want to give a shout out to David Ingram of Google for putting together jsmidgen. David’s library handled all the low-level concerns for generating MIDI files, adding tracks, and notes. Please keep in mind that MIDI is a music protocol and file format that focuses on the idea of turning notes and off like switches over time. Make sure to check out his work here: https://github.com/dingram/jsmidgen

How do you setup music maker?

git clone https://github.com/michaelprosario/music_maker.git
cd music_maker
npm install

Run go.bat or go.sh depending on your operating system

Hello world

var fs = require('fs');
var Midi = require('jsmidgen');
var Util = require('jsmidgen').Util;
import mm = require('./MusicMaker')

var beat=25;
var file = new Midi.File();

// Build a track
var track = new Midi.Track();
track.setTempo(80);
file.addTrack(track);

// Play a scale
var scale = mm.MakeScale("c4", mm.ScaleType.MajorPentatonic,2)

for(var i=0; i<scale.length; i++){
    track.addNote(0,scale[i],beat*2);
}

// Write a MIDI file
fs.writeFileSync('test.mid', file.toBytes(), 'binary');

Creating a new file and track

var file = new Midi.File();
var track = new Midi.Track();
track.setTempo(80);
file.addTrack(track);

// Play cool music here ...

Play three notes

track.addNote(0, mm.GetNoteNumber("c4"), beat);
track.addNote(0, mm.GetNoteNumber("d4"), beat);
track.addNote(0, mm.GetNoteNumber("e4"), beat);

Saving file to MIDI

fs.writeFileSync('test.mid', file.toBytes(), 'binary');

Playing a scale

var scale = mm.MakeScale("c4", mm.ScaleType.MajorPentatonic,2)

for(var i=0; i<scale.length; i++){
    track.addNote(0,scale[i],beat*2);
}

Playing drum patterns

var DrumNotes = mm.DrumNotes;
var addRhythmPattern = mm.AddRhythmPattern;
addRhythmPattern(track, "x-x-|x-x-|xxx-|x-xx",DrumNotes.ClosedHighHat);

Setup chord progression

var chordList = new Array();
chordList.push(new mm.ChordChange(mm.MakeChord("e4", mm.ChordType.Minor),4));
chordList.push(new mm.ChordChange(mm.MakeChord("c4", mm.ChordType.Major),4));
chordList.push(new mm.ChordChange(mm.MakeChord("d4", mm.ChordType.Major),4));
chordList.push(new mm.ChordChange(mm.MakeChord("c4", mm.ChordType.Major),4));

Play random notes from chord progression

var p = new mm.RandomPlayer
p.PlayFromChordChanges(track, chordList, 0);

Play root of chord every measure

var p = new mm.SimplePlayer
p.PlayFromChordChanges(track, chordList, 0);

Tour of chord players

var chordList = new Array();

// setup chord progression
chordList.push(new mm.ChordChange(mm.MakeChord("e4", mm.ChordType.Minor),4));
chordList.push(new mm.ChordChange(mm.MakeChord("c4", mm.ChordType.Major),4));
chordList.push(new mm.ChordChange(mm.MakeChord("d4", mm.ChordType.Major),4));
chordList.push(new mm.ChordChange(mm.MakeChord("c4", mm.ChordType.Major),4));

var chordPlayer = new mm.SimplePlayer
chordPlayer.PlayFromChordChanges(track, chordList, 0);

chordPlayer = new mm.Arpeggio1
chordPlayer.PlayFromChordChanges(track, chordList, 0);

chordPlayer = new mm.RandomPlayer
chordPlayer.PlayFromChordChanges(track, chordList, 0);

chordPlayer = new mm.BassPLayer1
chordPlayer.PlayFromChordChanges(track, chordList, 0);

chordPlayer = new mm.BassPLayer2
chordPlayer.PlayFromChordChanges(track, chordList, 0);

chordPlayer = new mm.BassPLayer3
chordPlayer.PlayFromChordChanges(track, chordList, 0);

chordPlayer = new mm.OffBeatPlayer
chordPlayer.PlayFromChordChanges(track, chordList, 0);

You can’t perform that action at this time.