What song inspired Mildred Taylor to name the book “Roll of Thunder, Hear My Cry”?

The name of the song that inspired the book was Roll of Thunder.

I was worrying about the book when a song came to me, which was “Roll of Thunder.” I had prayed over the book because it was too hard. When the song came I ran upstairs and told my father, “You’ve got to hear this.” I sang the song for him—everything came through in that song. I told him that day, this book is going to win the Newbery.