Google launched a Google Music platform, which is about discovering, purchasing, sharing and listening to digital music in new, innovative and personalized ways, according to Official Google Blog.

Last May Google launched Music Beta by Google with a clear ambition: to help people access their music collections easily from any device. Music Beta enables users to upload their personal music collection (up to 20,000 songs) for free to the cloud so they could stream it anywhere, any time. Now the beta service became a broader platform.

Google Music automatically syncs users’ entire music library both purchases and uploads across all devices so users don't have to worry about cables, file transfers or running out of storage space. It is also possible to select specific artists, albums and playlists to listen while being offline.

Google also added a new music store in Android Market, fully integrated with Google Music for purchasing music. The store offers more than 13 million tracks.

Google Music also has the feature of sharing the song with friends on Google+.

Now Google Music is open in the U.S. at market.android.com, and over the next few days, it will be also available in Android Market on devices running Android 2.2 and above.