Hi @ManWithJoeName!
Thumbprint Radio uses your thumbs to create a unique listening experience. By playing both thumbed-up and non-thumbed tracks from across all your stations, we hope to bring you lots of your favorites while sprinkling in some new finds in a seamless listening journey.
The song added to your collection are tracks that you can play on-demand at any time, and are not apart of your Thumbprint Radio station. However, with Pandora Premium, you do have Thumb Up playlists.
My Thumbs Up is a playlist that collects your Thumbed-Up tracks from each of your stations. When you sign up for Pandora Premium, we begin it by adding your 1,000 most recent Thumbs (if you have that many). Moving forward, every time you Thumb Up a song on one of your stations or eligible playlists, it will be automatically added to My Thumbs Up.
Unlike Thumbprint Radio, which plays your Thumbed-Up tracks along with other you may like, My Thumbs Up playlists will only play the songs you have Thumbed-Up.
To listen to this playlist, go to My Collection, sort by Playlists and select My Thumbs Up.
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@BigWillie I moved your post here as @AdamPandora shared some great info that I would recommend checking out regarding My Collection.
Hope this helps!
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