T-Mobile Rocks….or at least they let you stream rock for free now
Starting today, Simple Choice Plan customers can stream unlimited songs without using any of your monthly high-speed data allowance.

The free streaming is currently limited to Pandora, iHeartRadio, iTunes Radio, Rhapsody, Spotify, or Slacker right now however voting to add Google Music, Tune In and others is underway.  A pretty neat feature for T-Mobile users.

Here is the official word – http://how-to.t-mobile.com/setmusicfree/