HOW TO DELETE MUSIC FROM ITUNES, IPHONE, IPAD, IPOD (2019)
Open iTunes and ensure that you are viewing your iTunes library songs (click the ‘Songs’ option under the ‘Library’ header). Click through File > Library > Show Duplicate Items. Select the files you want to remove. Hit the ‘Delete’ key on your keyboard, or right-click a selected track, and click ‘Delete from Library’