Apple Music: The Good & The Bad
http://www.pastemagazine.com/article...d-the-bad.html
By letting users upload up to 25,000 songs to the Apple Music cloud (rumors say that this will be upped to 100,000 later this year), you can essentially combine your downloaded library with your streaming favorites in one place.
I don't yet understand how to toggle "shuffle" on-off in different playback modes.