Duplicate song removal in Apple Music library and photos in Photos app

Aloha all , here's how to remove the duplicate songs in the music library's of all your customers, if they are all paid for then they have some sort of marker to allow it to play, RIGHT, so write a sort program to find all that are legit and tag them, then sort the rest of the duplicates and list them, then press select all duplicates and move to trash ....DONE! all that genius and you can't even write a sort. come on already.

Same for the pictures in photos or iPhoto.

Too much space is taken up on hard drives and back up drives just copying and keeping them, I have 6719 duplicate songs, 3-5 duplicates of most songs, that's 46.70 GB of wasted space for this debacle. And even more in photos. Mahalo and your welcome!

[Edited by Moderator]

Original Title: duplicate song removal