For those that subscribed to the Groove Music Pass, some sad news. Microsoft is dropping the music pass and partnering with Spotify. Yes, there will be refunds available or some as well as a 60-day free trial of Spotify Premium for Music Pass customers. Many people in the forums, reddit, and Twitter are pretty upset with the change.
Hit the FAQ for more information, how to transfer your purchases to Spotify, refund information, etc..
We will continue to invest in and update the Groove Music app on all Windows devices to support playback and management of owned music, but after December 31, 2017, the Groove Music app will no longer offer the option to stream, purchase, and download music.