synth.set({

  "envelope": {

    "attack": 0.8,

    "release": 0.4

  }

})

synth.toMaster();

​

​

//Drone

let dl = new Tone.Loop(droneLoop, "8n");

​

function droneLoop(time) {

  synth.triggerAttackRelease("A1", "8n", time);

}

​

//Melody

let ml = new Tone.Loop(melodyLoop, "8n");

​

let major = [0, 2, 4, 5, 7, 9, 11, 12];

let minor = [0, 2, 3, 5, 7, 9, 10, 12];

​

let root = 21; // lowest A in MIDI

let octave = 3;

let myScale = major; // try minor and other modes

​

var probability = 0.7;

function melodyLoop(time) {

  if (random() < probability) { //stay silent sometimes

    let pos = floor(random(0, myScale.length));

    let note = root + myScale[pos] + octave * 12;

    let noteObject = Tone.Frequency(note, "midi");

    synth.triggerAttackRelease(noteObject, "8n", time);

  }

}

​

// Start

function mouseClicked() {

  if (Tone.context.state !== 'running') {

    Tone.context.resume();

  }

​

  Tone.Transport.start();

  dl.start();

  ml.start();

}

​

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

}