music on my mac does not show up as loaded in iTunes - do I need to delete it all and reload it?

Hi Allan,

Welcome to Apple Support Communities.

If I understand correctly, music is missing from the iTunes library on your MacBook Pro.

If the issue occurred after updating to the latest version of iTunes, try running through the troubleshooting suggestions in this article:

If you don't see your content after you update iTunes - Apple Support

If you're using Apple Music, this article will walk you through the process of adding songs from Apple Music to the iTunes library.

Add music from the Apple Music catalog to your library - Apple Support

Ciao.

Thank you for using the Apple Support Communities, Allan. Due to the nature of the iTunes issue, you may find more information by using another one of the Apple support resource provided here: https://getsupport.apple.com/GetproductgroupList.action.