First came MOG. Beats Music replaced MOG...
Now- Apple purchased BEATS several months ago and have replaced it with Apple Music. Apple Music is now available in near CD quality sound on your Sonos system. Visit the app store and update your Sonos app. Apple Music will appear as another available music source in the 'Add Music Services' menu. Like it's predecessors Apple Music is a monthly subscription service with a free initial trial.
Enjoy-
Doug