Groupon is offering up a FREE 3 Month Pandora Premium Subscription! Limit one per person. Pandora premium gives you the ability to search and play songs on-demand, no timeouts, fully customizable playlists and more offline listening options. To redeem, you must register your credit card with Pandora. After the 90 day promotional period, your plan will automatically renew at $9.99 a month, unless you cancel the plan. This freebie is valid through September 5th.