@Beijingmac Upgrading to Pandora Premium will not increase or decrease the amount of times you hear specific tracks on your regular radio stations.
If you are running into repetition in your stations, I recommend checking out the accepted solution to this thread to resolve that: Station Repetition
Here are a few of the benefits of Pandora Premium:
Listen to songs or albums on-demand.
Create custom playlists.
Enjoy podcasts.
Download songs, albums, stations and playlists for offline listening.
Access Higher Quality Audio
Queue content to keep the music playing
Utilize all of the benefits of Pandora Plus, like ad-free music, unlimited skips and replays on your stations.
Hope this helps!
... View more