Smart music discovery playlists are all the rage right now (just ask Spotify), and Microsoft knows it. It recently introduced a Your Groove feature to Groove Music that automatically creates playlists suited to your taste. It'll generate track listings for your existing OneDrive music collection based on your listening habits, moods and artist activity, so you can revisit a favorite band when it's on tour. However, the real party starts when you have a Music Pass -- Groove will throw new songs into the playlists to expand your horizons.