What is the theme in Ma Rainey's Black Bottom by August Wilson?

Power isa an important theme in the book. The dramatic question in the play is whether the band will complete the recording session despite conflicts among various band members and the power struggles between Rainey and Sturdyvant. The battle of wills between Rainey and Sturdyvant echoes the historical battle between capitalists and workers; only in this case, Rainey holds on to the goods (i.e., her music) that she produces until she gets what she wants from the white producer.