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HTML

              
                <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<script src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/255459/jquery.min.js"></script>
<script src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/255459/p5.js"></script>
<script src=https://s3-us-west-2.amazonaws.com/s.cdpn.io/255459/p5.dom.js></script>

<script src= "https://s3-us-west-2.amazonaws.com/s.cdpn.io/255459/Tone.min.js"></script>

<script src=https://s3-us-west-2.amazonaws.com/s.cdpn.io/255459/draggabilly.js></script>

<script src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/255459/StartAudioContext.js"></script>

<script src=https://s3-us-west-2.amazonaws.com/s.cdpn.io/255459/Interface.js></script>

<script type="text/javascript" src="https://tonejs.github.io/Logo/build/Logo.js"></script>

<script src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/255459/qwerty-hancock.js"></script>



	<style type="text/css">

	</style>
	<div id="Content">
		<!-- <div id="Title">MonoSynth</div>
		<div id="Explanation">
			<a href="https://tonejs.github.io/docs/#MonoSynth">Tone.MonoSynth</a> 
			is composed of one oscillator, one filter, and two envelopes.
	 		Both envelopes are triggered simultaneously when a note is triggered. 
	 	   	<img src="https://docs.google.com/drawings/d/1gaY1DF9_Hzkodqf8JI1Cg2VZfwSElpFQfI94IQwad38/pub?w=924&h=240"> -->
		</div>
		<div id="Keyboard"></div>
	</div>





              
            
!

CSS

              
                /* FOR MOBILES */
@media (max-width: 400px) {
  #TopBar #Homepage a {
    font-size: 16px !important; }

  #Content {

    font-size: 10px !important;
    max-width: calc(100% - 6px) !important; }

  #Content * {
    font-size: 14px !important; } }
html, body {
  padding: 0px;
  margin-right: 20px;
  height: calc(100% - 4px); }

/**
 *  
 *  TOP BAR
 *  
 */

#MobileStart {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 10000;
  top: 0px;
  left: 0px;
  background-color: rgba(0, 0, 0, 0.8); }
  #MobileStart #Button {
    position: absolute;
    left: 50%;
    top: 50%;
    background-color: #7F33ED;
    color: white;
    font-family: monospace;
    border-radius: 3px;
    margin-top: -40px;
    margin-left: -40px;
    width: 80px;
    height: 80px;
    text-align: center;
    line-height: 80px; }
  #MobileStart #Button:hover {
    background-color: #7F33ED;
    color: white; }
  #MobileStart #Button:hover:active {
    background-color: #ED33CF;
    color: #22DBC0; }

#Content {
  font-family: monospace;
  position: absolute;
  left: 3px;
  width: calc(100% - 6px);
  margin-bottom: 15px; }
  #Content #Title {
    height: 23px;
    line-height: 23px;
    font-size: 1.2em;
    color: white;
    width: calc(100% - 15px);
    padding-left: 15px;
    background-color: black; }
  #Content #Explanation {
    position: relative;
    font-family: monospace;
    padding: 15px;
    color: black;
    font-size: 14px;
    box-sizing: border-box;
    border: 3px solid black;
    border-top-width: 0px;
    width: 100%; }
    #Content #Explanation img {
      width: 80%;
      max-width: 700px;
      margin-left: auto;
      margin-right: auto;
      display: block; }
  #Content a {
    color: black;
    font-family: monospace;
    font-size: 14px;
    font-weight: bold;
    text-decoration: none; }
  #Content a:hover {
    color: #1EDF3E; }
  #Content a:hover:active {
    color: #ED33CF; }
  #Content #DragContainer {
    margin-left: 3px;
    margin-top: 3px;
    margin-bottom: 15px;
    width: calc(100% - 3px);
    height: 400px;
    position: relative;
    color: white; }
  #Content .Slider.x {
    position: relative;
    height: 94px;
    width: 100%;
    margin-top: 3px; }
    #Content .Slider.x .Axis {
      top: 50%;
      margin-top: -1.5px; }
  #Content .Slider.y {
    position: relative;
    width: 94px;
    height: 400px; }
    #Content .Slider.y .Axis {
      left: 50%;
      margin-left: -1.5px; }
  #Content .Dragger {
    width: 90px;
    height: 90px;
    position: absolute;
    background-color: black;
    border-radius: 50%;
    z-index: 1;
    margin-top: -2px;
    border: 2px solid white;
    cursor: -webkit-grab; }
    #Content .Dragger #Name {
      width: 100%;
      height: 100%;
      position: relative;
      text-align: center;
      font-size: 12px;
      font-family: monospace;
      line-height: 90px;
      color: white; }
  #Content .Dragger:hover {
    background-color: #3833ED;
    color: white; }
  #Content .Dragger.is-pointer-down {
    cursor: -webkit-grabbing;
    background-color: #ED33CF; }
    #Content .Dragger.is-pointer-down #Name {
      color: #1EDF3E; }
  #Content .Axis {
    position: absolute;
    background-color: black;
    width: 3px;
    height: 3px;
    top: 3px;
    left: 3px;
    border-radius: 1.5px;
    z-index: 0; }
  #Content #xAxis {
    width: calc(100% - 6px); }
  #Content #yAxis {
    height: calc(100% - 6px); }
  #Content .Button {
    width: 100%;
    margin-top: 3px;
    height: 90px;
    background-color: black;
    line-height: 90px;
    color: white;
    border-radius: 10px;
    text-align: center;
    cursor: pointer; }
  #Content .Button:hover {
    color: white;
    background-color: #3833ED; }
  #Content .Button:hover:active, #Content #Content .Button:hover:active.Active {
    color: #22DBC0;
    background-color: #ED33CF; }
  #Content .Button.Toggle.Active {
    box-sizing: border-box;
    border: 3px solid black;
    line-height: 84px;
    color: black;
    background-color: white; }
  #Content .Transport {
    width: 100%;
    height: 30px;
    background-color: black;
    line-height: 30px;
    color: white;
    border-radius: 10px;
    margin-top: 3px;
    position: relative; }
    #Content .Transport #Position {
      width: 70px;
      left: 50%;
      margin-left: -35px;
      text-align: left;
      height: 100%;
      position: absolute;
      color: white; }

#Keyboard {
top: 60%;
  width: 95%;
position:absolute;
/*   z-index:1; */
  margin: 3px !important; }

code {
  background-color: #ECECEC;
  color: #333;
  padding: 1px; }

#Loading {
  font-family: monospace;
  z-index: 100000;
  position: absolute;
  background-color: rgba(140, 140, 140, 0.5);
  width: 100%;
  height: calc(100% - 37.5px);
  top: 37.5px;
  left: 0px;
  opacity: 1;
  -webkit-transition: opacity 0.4s;
          transition: opacity 0.4s; }
  #Loading #Text {
    color: white;
    position: absolute;
    text-align: center;
    top: 50%;
    left: 50%;
    width: 300px;
    margin-left: -150px;
    height: 60px;
    margin-top: -30px;
    line-height: 60px;
    font-size: 42px; }

#Loading.Loaded {
  pointer-events: none;
  opacity: 0; }

              
            
!

JS

              
                var distances = [];
var maxDistance;
var spacer;	
var synth;
		var keyboard;
var bassPart;
var c;
function preload(){
	synth = new Tone.MonoSynth({
			"portamento" : 0.01,
			"oscillator" : {
				"type" : "square"
			},
			"envelope" : {
				"attack" : 0.005,
				"decay" : 0.2,
				"sustain" : 0.4,
				"release" : 1.4,
			},
			"filterEnvelope" : {
				"attack" : 0.005,
				"decay" : 0.1,
				"sustain" : 0.05,
				"release" : 0.8,
				"baseFrequency" : 300,
				"octaves" : 4
			}
		}).toMaster();
		// .toMaster();

		 bassPart = new Tone.Sequence(function(time, note){
			synth.triggerAttackRelease(note, "16n", time);
		}, ["C2", ["C3", ["C3", "B2"]], "E2", ["G2", "C1"]]).start(0);
		// "0", ["12", ["12", "11"]], "4", ["7", "-12"]].start(0);

		// C2+12 =  

		// bassPart.probability = 0.7;

		//set the transport 
		Tone.Transport.bpm.value = 90;
  
			keyboard = new QwertyHancock({
				id: "Keyboard",
				width: $("#Content").width()-50,
				height: 150,
				octaves: Interface.isMobile ? 1.26 : 3,
				startNote: "C3",
				whiteKeyColour: "white",
				blackKeyColour: "#2D885E",
				activeColour : "#FFFC65"
			});

			keyboard.keyDown = function (note, frequency) {
			    	
      synth.triggerAttack(frequency);
			Tone.Transport.start();
        // drawCircle(width/2, 36, 6);
			    
			    // noLoop();
			};

			keyboard.keyUp = function () {
				Tone.Transport.stop();
			    synth.triggerRelease();
         // loop();
			};
}

function setup() {
	c = createCanvas(windowWidth, windowHeight-200, WEBGL);
	c.position(0,0);
  noStroke();
  // noLoop();
}
function draw() {
	background(45, 136, 94);

	// Orange point light on the right
	pointLight(150, 100, 0, 500, 0, 200);

	// Blue directional light from the left
	directionalLight(0, 102, 255, -1, 0, 0);

	// Yellow spotlight from the front
	pointLight(255, 255, 109, 0, 0, 300);

	rotateY(map(mouseX, 0, width, 0, PI));
	rotateX(map(mouseY, 0, height, 0, PI));
	box(200);


			
}

function drawCircle(x, radius, level) {                    
  var tt = 126 * level/4.0;
  fill(tt);
  ellipse(x, height/2, radius*2, radius*2);      
  if(level > 1) {
    level = level - 1;
    drawCircle(x - radius/2, radius/2, level);
    drawCircle(x + radius/2, radius/2, level);
  }
}
              
            
!
999px

Console