Seith Mann's film, Harriet, is not the only project in the works about Tubman, who escaped slavery and subsequently led over 300 slaves to freedom through the fabled Underground Railroad's secret routes and safe houses - Viola Davis will play her in an untitled TV biopic, which will air on America's HBO network.

Cynthia's casting comes as she prepares for the Grammy Awards on Sunday (12Feb17), when she will join singer John Legend to perform a slowed-down version of The Beach Boys' God Only Knows as part of the In Memoriam segment. She is also nominated for the Best Musical Theater Album for The Color Purple.