Ember.run.later Mobile Sounds

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  actions: {
  playSounds() {
  		  var audio = new Audio(`https://s3.amazonaws.com/freecodecamp/simonSound1.mp3`);
        audio.play();
        Ember.run.later(this, function() {
            audio = new Audio(`https://s3.amazonaws.com/freecodecamp/simonSound2.mp3`);
            audio.play();
            Ember.run.later(this, function() {
              audio = new Audio(`https://s3.amazonaws.com/freecodecamp/simonSound3.mp3`);
              audio.play();
              Ember.run.later(this, function() {
              	audio = new Audio(`https://s3.amazonaws.com/freecodecamp/simonSound4.mp3`);
              	audio.play();
              }, 1000);
            }, 1000);
        }, 1000);
  	}
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>
<button {{action 'playSounds'}}>Play sounds</button>

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}