I have discovered that people listening to my public Cajun French Music playlist on any kind of I phone or phone period cannot view my liner notes next to each song. It may be that the viewer has to live in the country of the USA and has to view the list on a laptop or computer. A cellphone will play the songs, but just will not show the liner notes.

My advice is to either get a computer, or take the long and arduous journey of listing your own finding of what keys the songs are in. It may take a while.