This is the caption for an HTML5 Audio element
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<!-- add the inline width/height for responsive video -->
<figure class="media audio ">
    <audio id="player2" src="//assets.iu.edu/web/media/audio/indiana-our-indiana.mp3" type="audio/mp3" controls="controls"></audio>
    <figcaption>This is the caption for an HTML5 Audio element</figcaption>
</figure>