Listen to free radio (US/CA only), store up to 50000 songs, or subscribe for ad-free access to 35 million songs and offline listening.
https://play.google.com/store/music?hl=en
Google Play Music is a music and podcast streaming service and online music locker operated by Google. The service was announced on May 10, 2011, and after a six-month, invitation-only beta period, it was publicly launched on November 16, 2011.