Pandora Premium: the original music streaming giant is ready for prime time

Just over 15 months after Pandora acquired key assets from Rdio, and three months after it announced its plans, the company is ready to launch its full-fledged on-demand music service, Pandora Premium.For the most part, Pandora Premium is exactly what you would expect it to be: a $10-a-month service with millions of songs that you can listen to at will and save offline whenever you want. There are workout and driving mixes and — of course — a radio feature. But Pandora has worked to