Hey there, @mebleck. 👋
Sounds like this happens when your complimentary session of Premium has ended.
Premium Session Length:
There's a natural tension between valuable ad space and the listening experience. Because of that, we're actively testing the length of these sessions to provide the best listening experience for everyone. As a result, the average length and availability of your complimentary session may fluctuate. We'll automatically save your on-demand music collection for your next Premium experience.
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Starting a New Session:
To start a new session, simply search our library from your computer or mobile device for a song or album, and click play.
If you are eligible for a free session of Pandora Premium, clicking play will trigger a short advertisement, after which you can enjoy your on-demand content.
You can find out more about how Premium sessions work in this helpful article: Premium Sessions
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Sorting your Collection:
While you're in a Premium session, You can sort your content from the My Collection page.
Select the caret on the far right side of your screen and from here, you can sort by Albums, Songs, Stations, Playlists or Artists.
Please note that you can't currently sort your collection by A-Z; only Artists are listed alphabetically by default at this time.
Hope this information is helpful. 🎧
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