When I first started writing plays I couldn't write good dialogue because I didn't respect how black people talked. I thought that in order to make art out of their dialogue I had to change it, make it into something different. Once I learned to value and respect my characters, I could really hear them. I let them start talking.
Blues is the bedrock of everything I do. All the characters in my plays, their ideas and their attitudes, the stance that they adopt in the world, are all ideas and attitudes that are expressed in the blues.
I know some things when I start. I know, let's say, that the play is going to be a 1970s or a 1930s play, and it's going to be about a piano, but that's it. I slowly discover who the characters are as I go along.