Individual songs are loaded into this div, eg "song1.htm":
      <audio id="song1" preload controls autoplay>
            <source src="song1.mp3" type="audio/mp3">
            your current browser does not support the new audio standard: upgrade if you can
      </audio>

I want to attach an animation to fire once when the song starts playing: 

       function myAnimation() { /// }

In an external javascript file, I've tried
      $('#song #song1').one('play', function() {
            myAnimation() ;
      });