​

function setup() {

  let cnv = createCanvas(400, 400);

  cnv.mousePressed(playSound);

  background(240, 228, 66);

  fill(0, 114, 178);

  textSize(80);

  textAlign(CENTER);

  text('click me', width/2, height/2);

  synth = new p5.MonoSynth();

}

​

function playSound() {

  userStartAudio();

​

  let note = random(['C4', 'D#4', "F4", "G4", "A#4"]);

  // note velocity (volume, from 0 to 1)

  let velocity = random();

  // time from now until it plays (in seconds)

  let time = 0;

  // note duration (in seconds)

  let dur = 1/2;

​

  synth.play(note, velocity, time, dur);

}

​