It's hard to say for sure. 'Ma' could be a blend of real-life incidents and creative imagination. Maybe some aspects are based on truth while others are made up to make the story more engaging.
I don't have enough information to tell. It's possible that it has some roots in reality, but it could also be a completely made-up story set in 2019 for entertainment purposes.
Ma is not based on a true story. It's likely the product of the author's imagination and creative process. The plot and characters are crafted to entertain and engage the audience rather than reflecting real-life occurrences.
Definitely. The movie takes elements from the actual experiences and careers of blues musicians like Ma Rainey to create its narrative. However, some creative liberties might have been taken for dramatic effect.