​

function preload() {

  song = loadSound("./epic-hip-hop.mp3");

}

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  song.playMode("restart");

}

​

function draw() {

  if (song.isPlaying()) {

    background(20, 220, 120);

  } else {

    background(220, 20, 120);

  }

}

​

function mouseClicked() {

  if (!song.isPlaying()) {

    song.play();

  }

}

​