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Groove Music (formerly known as Xbox Music) is a music streaming service from Microsoft. It is available for $99.90 for 12 months or $9.99 per month.
SpecsUpdate
Pros
Pro Modern UI design
The designs of each Groove Music application from the web application to the Windows Phone 8 application are all slightly different but they all share a modern and attractive design. Though the applications on iOS and Android are less appealing than on the other platforms.
Cons
Con Poor music quality
Bitrate quality is not explicitly stated by Microsoft, but music is reported to be streamed at 192kbps WMA which is lower than most comparable streaming services. While music is downloaded at 256kbps WMA, an improvement but still lower than Google Play Music and Spotify.
Con No social network integration
This may be a huge pro or a con for different types of people. Groove Music does not offer comprehensive social integration like other music services such as Spotify. The only social feature Groove Music offers is the ability to a share a link to a song to Twitter, Facebook, or email. Groove Music will keep all your musical tastes strictly private unless you individually share it.