Q: How can a parent restrict a child's access to a PARENT'S PRE-EXSISTING iTunes account via iCloud's Family Sharing Program?

How can a parent restrict a child's access to a PARENT'S PRE-EXSISTING iTunes account via iCloud's Family Sharing Program?  To explain further... I have a young son who is on my iCloud family sharing program... I am excited to be able to share SOME of my music in my iTunes library, but there are some songs and music videos that are not age appropriate for him and currently there is no way to restrict him from viewing and downloading anything off of my iTunes library.  Yes, I suppose I can delete the songs he shouldn't have access to, but I don't think I should have to do that... I paid for them and still like them and listen to them while I work out or am without my kids.  Is there a way for me to personally select which songs/videos I would like to "hide" from my children in an effort to shield them from inappropriate content?