title: What is the difference between these MPMediaQuery results?
body: <p>What is the difference in the results between these two queries:</p>
  
  <pre><code>let myQuery:MPMediaQuery = MPMediaQuery.songsQuery()
  myQuery.groupingType = MPMediaGrouping.Album
  </code></pre>
  
  <p>and </p>
  
  <pre><code>let myQuery:MPMediaQuery = MPMediaQuery.albumsQuery()
  </code></pre>