iTunes Music Gone!
All of my music has vanished fro iTune after updating to macOS 10.14. I've just copied hundreds of CDs into my iMac Library to preserve the songs. When I open iTunes, I only see 12 songs and no playlists. I have hundreds on my iPhone, and now am afraid to connect my iPhone to my iMac in case all those songs disappear, too.
The offered solution from Apple Support is useless; there is not "Previous Library" in my iTunes folder.
What the !@#$% has happened? And how do I get __MY__ music back onto this iMac?
macOS Mojave (10.14)