After discussing Xbox Music back at E3, Microsoft has finally launched the service this week on the Xbox 360, which will also be available shortly for Windows 8 and Windows NT PCs, as well as tablets and Windows 8 phones.

“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.”

Aside from streaming music through custom playlists, Xbox Music will also let users purchase songs and albums and subscribe to the service for unlimited streaming.  For those looking for offline listening or unlimited access to music, an Xbox Music Pass can be purchased for $9.99/month and used to stream music across all compatible devices without ads.

Cloud Storage will also be offered in the coming year to allow for a cloud-based catalog for listening to music wherever you go, even with music you already own.

According to Microsoft, they will also add social features and an eventual expansion to other devices.