You may accidentally erase a precious song on your playlist. Whilst spotify has an option to recover an accidentally deleted playlist, you can't recover a specific song. Whenever you make this kinds of mistakes unless you know the specific song you erased obviously.
Vote if you want a "Deleted songs Recycle Bin" or so, a place where you can search through a history of deleted songs and restore them to where they were before deleting them
Updated on 2019-12-09
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This is a repost of this inactive idea.
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