Music went missing off my iTunes library
I lost quit a bit of my iTunes library and for example Adele I had 12 albums NOT ALL PURCHASED THROUGH ITUNES BUT SOME I COPIED OFF FRIENDS WHO I LOST TOUCH WITH. I can see them all on my iPhone but they are no longer in my PC library. I am afraid if I sync my iPhone to iTunes library it will delete the previous music off my iPhone as it is no longer in my library. Please help as I have had to rebuild my library completely once already due to Microsoft screwing up. I know purchased music from iTunes is not a problem but some albums are copied and will be lost forever.
thanks anyone
Windows, Windows 10