Story talk:Operation Guardian Angel/@comment-222.65.193.15-20120719054541/@comment-796766-20120719172423

They did, it's a traditional African spiritual. Christopher Tin arranged a more pronounced version, which I used here. Baba Yetu does literally translate to Our Father from Swahili, and I felt that making a character named Baba Yetu as a kind of ancient great king character would be a good idea.