Review: Don’t ditch Pandora yet for iTunes Radio
So? » ITunes Radio is a contender in Internet radio by dint of being featured prominently in iOS 7. The Music app is at the bottom right on each home screen. You simply need to go there and choose "Radio." It's also reachable from the home page of the iTunes Store on the desktop app.
Apple's new music feature does a serviceable job of generating songs in a lean-back listening format. However, it is a step or two behind Pandora in fine-tuning your playlist.
The last thing I'll say in this regard: iTunes Radio has a slider function that allows you to adjust your station to favor "hits," ''variety" or "discovery." I noticed no discernible impact on what was played.
ITunes Radio could get better over time. But I wouldn't get rid of Pandora. Not yet.
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