From the show:

Hop onto an imaginary train of memories with famed African-American blues and jazz singer and songwriter Alberta Hunter as she follows her long-dead friend, black comedian Bert Williams (Will), now her glad-handed guide and conductor. He has promised to stir up enough memories of her past successes, friends, and loves to encourage her return to the music she left some twenty years past in the late 1950s. Hunter’s life story, rife with danger, uncertainty, heartbreak, and triumph lays bare the tension that our racial and sexual histories create inside all of us and the danger that history has been and can be to our ability to love.