Google is here to help you "discover the music you love," and to do so, they have announced Google Play Music All Access. It is a subscription based music streaming service that provides users with "millions of tracks in addition to your library" and "gets your right to the music without any hassle."
The service will pull all your music that you've uploaded to Google Play Music, and integrate it right into All Access, so you can seamlessly browse the music available for streaming and your own library at the same time. It is unclear if you have your own uploaded music if Google will match and stream its own copies a la Spotify or play your original uploads
When you open the app, it takes you to its Explore feature which provides personalized recommendations. You can browse through your recommendations and play any song that is listed instantly. The software can also instantly create a radio station based on the song you are playing. It provides a 'peek' feature that allows you to slide your finger across the screen to see what's coming up. You can also switch to a 'playlist' view which allows you to swipe away tracks you don't want to hear, and rearrange them. Think a more streamlined version of Pandora. Google has called it "radio without rules."
The service will be available on Android devices as well as PCs via a web browser. It will cost $9.99 each month, or $7.99 if you sign up by June 30th. Google is offering new users a 30 day free trial.
Update: The service is now live on the web. Just head to Play Music and you should be prompted to activate All Access.