As predicted, Google unveiled its own all-you-can-stream music subscription service to compete with Spotify, Rdio, Deezer and MOG. It's a crowded space with challenging economics, but if anybody is well-positioned to win this game, it's Google.  Google Play Music All Access will offer on-demand access to millions of songs for $9.99 per month, which is the same as every other ...

The unofficial leaders of the streaming-music market, Rdio and Spotify, are both awfully good services. But neither is close to perfect, which led me to wonder just how you'd create the ultimate online music service. The answer isn't hard: Just merge Spotify and Rdio. Alternatively, the two sites should just copiously steal features from one another. Or someone could found ...