let song;

​

function preload() {

  song = loadSound('bensound-relaxing.mp3')

}

​

function setup() {

  createCanvas(400, 400);

  button = createButton('');

  button.position(20, 20);

  button.mousePressed(playSound);

  button.addClass('button');

​

  function playSound() {

    if (song.isPlaying()) {

      song.stop();

    } else {

      song.play();

    }

​

  }

​

}

​

function draw() {

  background(220);

​

}