diff --git a/demo/index.html b/demo/index.html
index c491c9f..bc331e5 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -45,7 +45,6 @@
     </style>
 </head>
 <body>
-    <a href="https://github.com/DIYgod/APlayer" target="_blank" class="github-corner"><svg width="80" height="80" viewBox="0 0 250 250" style="fill:#151513; color:#fff; position: absolute; top: 0; border: 0; right: 0;"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>
     <div class="container">
         <h1>APlayer</h1>
         <h2>Wow, such a beautiful html5 music player</h2>
@@ -53,10 +52,42 @@
         <hr>
         <h3>Normal</h3>
         <div id="player1" class="aplayer"></div>
-        <h3>With lyrics</h3>
-        <div id="player3" class="aplayer"></div>
+        <p></p>
+        <button onclick="ap1.play()">ap.play()</button>
+        <button onclick="ap1.play(100)">ap.play(100)</button>
+        <button onclick="ap1.pause()">ap.pause()</button>
+        <button onclick="ap1.toggle()">ap.toggle()</button>
+        <button onclick="ap1.volume(0.1)">ap.volume(0.1)</button>
+        <button onclick="ap1.addMusic([
+            {
+                title: 'あっちゅ～ま青春!',
+                author: '七森中☆ごらく部',
+                url: 'http://devtest.qiniudn.com/あっちゅ～ま青春!.mp3',
+                pic: 'http://devtest.qiniudn.com/あっちゅ～ま青春!.jpg',
+                lrc: 'あっちゅ～ま青春!.lrc'
+            },
+            {
+                title: 'secret base~君がくれたもの~',
+                author: '茅野愛衣',
+                url: 'http://devtest.qiniudn.com/secret base~.mp3',
+                pic: 'http://devtest.qiniudn.com/secret base~.jpg',
+                lrc: 'secret base~君がくれたもの~.lrc'
+            },
+            {
+                title: '回レ！雪月花',
+                author: '小倉唯',
+                url: 'http://devtest.qiniudn.com/回レ！雪月花.mp3',
+                pic: 'http://devtest.qiniudn.com/回レ！雪月花.jpg',
+                lrc: '回レ！雪月花.lrc'
+            }
+        ])">ap.addMusic(...)</button>
+        <button onclick="ap1.destroy()">ap.destroy()</button>
         <h3>With playlist</h3>
         <div id="player4" class="aplayer"></div>
+        <p></p>
+        <button onclick="ap4.setMusic(2)">ap.setMusic(2)</button>
+        <h3>With lyrics</h3>
+        <div id="player3" class="aplayer"></div>
         <h3>With playlist and lyrics</h3>
         <div id="player5" class="aplayer"></div>
         <h3>Narrow</h3>
@@ -64,5 +95,6 @@
     </div>
     <script src="../dist/APlayer.min.js"></script>
     <script src="demo.js"></script>
+    <a href="https://github.com/DIYgod/APlayer" target="_blank" class="github-corner"><svg width="80" height="80" viewBox="0 0 250 250" style="fill:#151513; color:#fff; position: absolute; top: 0; border: 0; right: 0;"><path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path><path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path><path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path></svg></a><style>.github-corner:hover .octo-arm{animation:octocat-wave 560ms ease-in-out}@keyframes octocat-wave{0%,100%{transform:rotate(0)}20%,60%{transform:rotate(-25deg)}40%,80%{transform:rotate(10deg)}}@media (max-width:500px){.github-corner:hover .octo-arm{animation:none}.github-corner .octo-arm{animation:octocat-wave 560ms ease-in-out}}</style>    
 </body>
 </html>
\ No newline at end of file
