To the winners the spoils, to the losers the songs?
In the English tradition it seems that the majority of songs are written by(or about) those on the losing side. I suppose it makes sense in that if you are, for example, living on the profits of umpteen coalmines any songs you might inspire about how good your life is are likely to have limited appeal and are superfluous to the enjoyment of your riches! By the same token are there any songs written from the point of view of the slave owner?
All the best