message: using p5.Tone.js in example
  [skip ci]
diff: <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
  <link rel="icon" type="image/png" sizes="174x174" href="./style/favicon.png">
  + <script type="text/javascript" src="./scripts/p5.js"></script>
  <script type="text/javascript" src="../build/Tone.js"></script>
  + <script type="text/javascript" src="./scripts/p5.Tone.js"></script>
  <script type="text/javascript" src="./scripts/jquery.min.js"></script>
  <script type="text/javascript" src="./scripts/draggabilly.js"></script>
  <script type="text/javascript" src="./scripts/StartAudioContext.js"></script>
  <script type="text/javascript" src="./scripts/Interface.js"></script>
  <script type="text/javascript" src="https://tonejs.github.io/Logo/build/Logo.js"></script>
  - <script type="text/javascript" src="./scripts/p5.js"></script>
  <link rel="stylesheet" type="text/css" href="./style/examples.css">
  <div id="Explanation">
  By accessing the envelope's current value, we can create responsive visuals that are directly tied to what is heard.
  <br><br>
  - This sketch uses <a href="https://p5js.org" target="_blank">p5.js</a> for visual components and the
  - <a href="https://tonejs.github.io/build/latest/p5.Tone.min.js">p5 version of Tone.js</a>
  - which adds a p5 <code>preload</code> hook for buffer loading.
  + This sketch uses <a href="https://p5js.org" target="_blank">p5.js</a> for visual components.
  </div>
  </div>
  <script id="p5" type="text/javascript">
  