index.html

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    <title>AIR GUITAR</title>
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    <video id="video"></video>
    <audio id="audio" src="./A.mp3"></audio>
    <div class="notes">
      <h3>E</h3>
      <h3>C</h3>
      <h3>B</h3>
      <h3>A</h3>
    </div>

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