piano roll works fine... and needs visual enhancement
<html>
<head>
<title>Piano Roll with pixi.js</title>
<style>
body {
margin: 0;
padding: 0;
background-color: #FFF;
}
#log {
height: 20em;
overflow-y: scroll;
background-color: #faa;
}
</style>
</head>
<body>
<h1>OSC websocket Piano Roll Test</h1>
<noscript>You must enable JavaScript</noscript>
<pre id="log"></pre>
<p><a href="#" onclick="clearInterval(moveInterval); clearInterval(linesInterval); return false;">stop intervals</a></p>
<script src="pixi.js"></script>
<script src="app.js"></script>
</body>
</html>