People said her great-great-aunts posed as white and robbed banks. So she wrote a musical about them.

https://www.washingtonpost.com/entertainment/theater_dance/people-said-her-great-great-aunts-posed-as-white-and-robbed-banks-so-she-wrote-a-musical-about-them/2020/02/06/d8d5b2ec-4797-11ea-8124-0ca81effcdfb_story.html