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Google Play Music is a music streaming service and online music locker operated by Google. Users with standard accounts can upload and listen to up to 50,000 songs from their personal libraries at no cost. An "All Access" subscription, available for US$9.99 per month, entitles users to on-demand streaming of any song in the Google Play Music catalogue for their geographical region and the ability to create custom radio stations. Users can purchase additional tracks for their library through the music store section of Google Play. In addition to offering music streaming for Internet-connected devices, the Google Play Music mobile app allows music to be stored and listened to offline. The service was announced on May 10, 2011, and after a six-month, invitation-only beta period, it was publicly launched on November 16. Google Play Music offers more than 30 million tracks for purchase or streaming. It is currently available in 58 countries for Android and iOS devices, web browsers, and various media players (such as Sonos and Chromecast). ==History== Google first hinted at releasing a cloud media player during their 2010 I/O developer conference, when Google Senior Vice President of Social Vic Gundotra showed a "Music" section of the Android Market during a presentation. A music service was officially announced at the following year's I/O conference on May 10, 2011, under the name "Music Beta". Initially, it was only available by invitation to United States residents and had limited functionality; the service featured a no-cost online music locker for storage of up to 20,000 songs that could be played via its web player or Android mobile app, but no music store was present during the beta period, as Google was not yet able to reach licensing deals with major record labels. After a six-month beta period, Google publicly launched the service in the US on November 16, 2011, as "Google Music" with its "These Go to Eleven" announcement event. The event introduced several features to the service, including a music store for the Android Market, music sharing via the Google+ social network, "Artist Hub" pages for musicians to self-publish music, and song purchasing reflected on T-Mobile phone bills. At launch, Google had partnerships with three major labels—Universal Music Group, EMI, and Sony Music Entertainment—along with other smaller labels, although no agreement had been reached with Warner Music Group; in total, 13 million tracks were covered by these deals, 8 million of which were available for purchase on launch date. To promote the launch, several artists released free songs and exclusive albums through the store; The Rolling Stones debuted the live recording ''Brussels Affair (Live 1973)'', and Pearl Jam released a live concert recorded in Toronto as ''9.11.2011 Toronto, Canada''. According to a February 2012 report from CNET, Google executives were displeased with Google Music's adoption rate and revenues in its first three months. The following month, the company rebranded the Android Market and its digital content services as "Google Play"; the music service was renamed "Google Play Music". 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Google Play Music」の詳細全文を読む スポンサード リンク
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