Only show exact duplicates in iTunes
A great feature of iTunes is the “Display Duplicates” option that is located in the File menu. This is really useful for finding duplicate songs in your iTunes Library and deleting them.
However, by default, iTunes is quite lenient about what it defines as a duplicate. As long as the Song Name and Artist are the same, the song will be counted as a duplicate. This can be a bit annoying, for example if you have different versions of the same song on different albums and you want to keep both.
To make iTunes more strict when showing duplicates, hold down the Option key before selecting the menu item. You should see it change to “Display Exact Duplicates.” Now only songs that have exactly the same information will be displayed, allowing you to more easily find the true duplicates.