I made the mistake a few months ago to start sub-cataloguing my music library using custom genres.
I am now in a very deep cave with no way out. My food is running out and my leg is wedged underneath a very heavy rock.
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... same thing happened to me when I finally decided to backup all of my 50 years of collecting music to a backup drive ...
I waited so long in the cave ... no food, no water, battling the elements. It was a miracle I made it out alive. I may have eaten one of my toes.
Best of luck. I hope you have enough wood for a fire ...