title: Sound Tracking in Android
body: <p>Android application <a href="https://play.google.com/store/apps/details?id=com.schematiclabs.soundtracking&amp;hl=en" rel="nofollow">Sound Track</a> is doing some following job.</p>
  
  <ul>
  <li>Listen the song/sound track</li>
  <li>Search the track from server</li>
  <li>Provide full detail about the track like movie name, album name, singer etc</li>
  </ul>
  
  <p>My question is <strong>Which type of mechanism they are using to track a sound/song?</strong></p>