This week, a slew of new character posters — and one dramatic new photo — from Netflix's Ma Rainey's Black Bottom were released into the world. The new adaptation of playwright August Wilson's 1982 play of the same name and is based, in part, on the life of actual "Mother of Blues" singer Ma Rainey. Notably, the Netflix period drama will serve as the late Chadwick Boseman's final on-screen appearance following his sudden passing in August. [caption id="attachment_938128" align="alignright" width="360"] Image via Netflix[/caption] Viola Davis tackles the lead role of Ma Rainey in …