Querying Google Play Music database in Android

I am trying to query for the playlists created by "Google Play Music" app but haven't been able to do so. I created a playlist using locally stored content. I used the following code to query:

Cursor c = managedQuery(MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI,
                                       new String[] {MediaStore.Audio.Playlists._ID,
                                                     MediaStore.Audio.Playlists.NAME
                                                    }, null, null, null);

This works fine for Winamp but not for Google Play Music. In fact, Winamp doesn't display the playlists created with Google Play Music. However, Google Play Music displays the playlists created with Winamp. My guess is that Google Play Music is using its own database to store the playlists where as other players use Content Provider with uri MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI to store their playlists. Is there a way to get playlists created with Google Play Music?