This process is a workaround, not necessarily a solution to the problem. What if you can't recall what the song was? I understand you were just listening to it, however what if you're multitasking etc, and you really don't know for sure what it was.
Accidentally clicked delete on a mix.. and then accidentally clicked remove artist from lists, and now can't find it no matter what i do! Also why is this marked as fixed when clearly it's not resolved for anyone?!