Microsoft announced today that it will soon shutter both its Groove Music Pass streaming service and the ability to purchase songs and albums in the Windows Store. The biggest surprise isn't that the service never took off, it's that Microsoft has partnered with Spotify to move all its Groove Music Pass customers over to Spotify. TechCrunch reports: Starting December 31, the Groove Music app will lose its features for streaming, purchasing and downloading music. Microsoft promises that moving to Spotify will be pretty seamless and that virtually all the songs and playlists that Groove users created over the years will transfer to the new service. Windows Insiders will be able to test this out with the next update, which is scheduled to roll out next week. Users will have until at least January 31, 2018 to make the move, though. For the most part, Spotify offers a superset of Groove's music catalog, so except for a few edge cases, there's no reason to believe that moving to Spotify would be a great loss for Groove Music Pass customers. And because Spotify is available on Windows Phone, too, even the few users still left on Microsoft's failed mobile platform won't miss out. As for Groove Music itself, Microsoft says the actual app won't go away anytime soon. It'll still be available for playing back and managing music that's stored locally.