--- a/index.html	Tue Oct 11 13:25:44 2016 +0800
+++ b/index.html	Tue Oct 11 13:25:59 2016 +0800
@@ -117,6 +117,10 @@
       $(function() {
         var player = window.player = new Player();
 
+        player.on('change:track', function() {
+          $('title').text(player.get('track').get('song'));
+        });
+
         var front = window.front = new FrontView({
           el: '[data-front]',
           model: player