As per your question, there isn't a "Unlike All" button as an option on the app.
However, as a workaround and if you wish to empty your "Liked Sings" folder, I'd recommend logging in to your account on a Desktop version of the app (using Mac/PC) and clicking Ctrl+A then Delete on all files - this will have your folder emptied.
Hope this helps.
Let me know if you have further questions 🙂
OneByBooRock Star 19
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