Microsoft offers a subscription-based music service called Xbox Music Pass (www.xbox.com/en-US/music/music-pass).
An Xbox Music Pass subscription enables you to play unlimited music on
your Windows Phone 8 device or other compatible devices.
After you have registered for an Xbox Music
Pass subscription, you can link your phone to your Xbox Music account
and have full access to it from your phone.
Connecting Your Phone to Xbox Music Pass
To connect to Xbox Music Pass, you must
configure your phone to use the same Microsoft account as you used when
you signed up for it. You can connect your phone to your Xbox Music
Pass by opening Music+Videos from your phone’s Home screen (or
accessing it from the App List) and then following these steps:
1. Tap the Menu icon.
2. Tap Settings.
3. Verify that the Connect with Xbox Music slide bar is set to On.
4. Verify that the Xbox Music Cloud Collection slide bar is set to On.