In the first part of the paper, Horský claims that narrative art plays an important role in shaping the moral outlook of its recipients. In the second part of this paper, he analyzes American rap music as a case study of one contemporary type of narrative art. Horský argues that rap music, due to its massive popularity, repeated consumption, and harnessing of the influence of several transmission biases, constitutes an especially fruitful object for the study of the cultural transmission of value systems through narrative art forms.
You can find the paper here:
https://brill.com/view/journals/jocc/22/3-4/article-p264_5.xml