Microsoft begins the launch of Xbox Music tomorrow, offering 30 million songs for users to stream to their Xbox 360, PC, phone and tablet devices.
The service will offer a number of free features including streaming music on Windows 8 and Windows RT.
But Xbox 360 owners will need to pay a monthly £8.99 / $9.99 fee on top of a Gold subscription for ad-free songs with unlimited playback on the console, as well as access to "tens of thousands" of music videos.
"The launch of Xbox Music is a milestone in simplifying digital music on every type of device and on a global scale," said Don Mattrick, president of the Interactive Entertainment Business at Microsoft.
"We're breaking down the walls that fracture your music experiences today to ensure that music is better and integrated across the screens that you care about most - your tablet, PC, phone and TV."
The service goes live on Xbox 360 tomorrow alongside a dashboard update and later this month with the launch of Windows 8 on October 26.
At a later date Microsoft is promising cloud storage, social features and expansion to other platforms.