Have you heard of a tale called "The New Squirrel"? It's a good one!
Most Fallout 4 holotapes contain diaries, notes, or chronicles of past events. The New Squirrel is not like most holotapes, however, because it seems directed entirely at children. While I never found these tapes in my own playthrough, listening to them now I'm tickled/horrified at the sort of stories adults used to tell kids in the world of Fallout:
Thanks for uploading, xBlu!