BACKING UP CERTAIN TYPES OF MUSIC ON ITUNES BEFORE UPDATING DEVICES.
How can I backup music I own but no longer have on tape, like family music and old music I downloaded to my devices years ago. I am about to update Mac, iPad and iPhone to the newer system versions that do not include iTunes. I am afraid if I make a mistake I will lose music that is precious to me and I can not replace. If you can help I will be forever grateful.
iMac 21.5″ 4K, macOS 10.12