title: How to find out how the `Music App` is installed?
body: <p>My app imports music from the <code>Music app</code> via <code>MPMediaPickerController</code>. A modal will appear even if the user has deleted the music app. However, if it was deleted in iOS13, the modal no longer appears. So I want to check if the <code>Music app</code> is installed. I tried the following code and confirmed that YES is returned even if it is not installed.</p>
  
  <pre class="lang-c prettyprint-override"><code>- (BOOL)isInstalledMusicApp
  {
      NSURL *url = [NSURL URLWithString:@"music://"];
      return [[UIApplication sharedApplication] canOpenURL: url];
  }
  </code></pre>