Lisa Marie was 9 when her father’s death occurred in August 1977.
“It was a very private thing for her,” Keough added.
“She would listen to his music alone, if she was drunk, and cry.”

Riley Keough and Lisa Marie Presley in 2017.Neilson Barnard/Getty
The project was then put off, but Presley’s passing spurred Keough to revisit the project.