Microsoft is continuing its 12 days of deals today with a 50 percent discount on a 12-month Xbox Music subscription. Normally priced at $99.90, Microsoft is allowing US customers to purchase a subscription for just $49.90. The deal is limited to three subscriptions per customer, and a code for the service will be delivered digitally. Xbox Music is similar to Spotify, providing access to 30 million songs for streaming and the ability to purchase and download individual tracks and albums. 12 months of Xbox Music includes ad-free music streaming to iOS, Android, Windows 8, Windows Phone, Xbox One, and Xbox 360.  Microsoft’s Xbox Music deal is only available today “while supplies last.”