Updating ipod library
Then, on the computer that contains your original music library, make sure that you're signed in to i Tunes with the Apple ID that you use with Apple Music and have i Cloud Music Library turned on.
Then, from the menu bar at the top of your computer screen or the top of the i Tunes window, choose File Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement.
One-click category selection allows you to customize which genres you wish to see on your shelves.
Make sure that that you have the latest version of i OS on your i Phone, i Pad, or i Pod touch; mac OS and i Tunes on your computer; or the Apple Music app on your Android device.Every time I would sync the phone, fewer songs would be copied and I would get a message saying “X number of items could not be synced. So the above image shows how a normal collection should look when all your songs are syncing fine.Instead of the image above, a lot of the songs were greyed out and there were a strange sync icon to the left of the check marks.* When you choose Merge, songs on your device that are in the Apple Music catalog become instantly available to access on your other devices.On i Phone, i Pad, and i Pod touch, songs that we can't match are shown on your other devices.